diff --git a/.travis.yml b/.travis.yml
index 429f28631..aa6d577a3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,33 +18,14 @@ env:
 
 matrix:
   include:
-    - php: 5.6
-      env:
-        - DEPS=lowest
-    - php: 5.6
-      env:
-        - DEPS=locked
-        - EXECUTE_HOSTNAME_CHECK=true
-        - TEST_COVERAGE=true
-    - php: 5.6
-      env:
-        - DEPS=latest
-    - php: 7
-      env:
-        - DEPS=lowest
-    - php: 7
-      env:
-        - DEPS=locked
-        - CS_CHECK=true
-    - php: 7
-      env:
-        - DEPS=latest
     - php: 7.1
       env:
         - DEPS=lowest
     - php: 7.1
       env:
         - DEPS=locked
+        - EXECUTE_HOSTNAME_CHECK=true
+        - TEST_COVERAGE=true
     - php: 7.1
       env:
         - DEPS=latest
@@ -66,6 +47,15 @@ matrix:
     - php: 7.3
       env:
         - DEPS=latest
+    - php: 7.4
+      env:
+        - DEPS=lowest
+    - php: 7.4
+      env:
+        - DEPS=locked
+    - php: 7.4
+      env:
+        - DEPS=latest
 
 before_install:
   - if [[ $TEST_COVERAGE != 'true' ]]; then phpenv config-rm xdebug.ini || return 0 ; fi
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 035e0f413..fa92841ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,15 +2,21 @@
 
 All notable changes to this project will be documented in this file, in reverse chronological order by release.
 
-## 2.12.3 - TBD
+## 2.13.0 - 2019-12-27
 
 ### Added
 
-- Nothing.
+- [#275](https://github.com/zendframework/zend-validator/pull/275) adds a new `strict` option to `Zend\Validator\Date`; when `true`, the value being validated must both be a date AND in the same format as provided via the `format` option.
+
+- [#264](https://github.com/zendframework/zend-validator/pull/264) adds `Zend\Validator\UndisclosedPassword`, which can be used to determine if a password has been exposed in a known data breach as reported on the [Have I Been Pwned?](https://www.haveibeenpwned.com) website. [Documentation](https://docs.zendframework.com/zend-validator/validators/undisclosed-password/)
+
+- [#266](https://github.com/zendframework/zend-validator/pull/266) adds a new option to the `File\Extension` and `File\ExcludeExtension` validators, `allowNonExistentFile`. When set to `true`, the validators will continue validating the extension of the filename given even if the file does not exist. The default is `false`, to preserve backwards compatibility with previous versions.
 
 ### Changed
 
-- Nothing.
+- [#264](https://github.com/zendframework/zend-validator/pull/264) bumps the minimum supported PHP version to 7.1.0.
+
+- [#279](https://github.com/zendframework/zend-validator/pull/279) updates the `magic.mime` file used for file validations.
 
 ### Deprecated
 
@@ -18,7 +24,7 @@ All notable changes to this project will be documented in this file, in reverse
 
 ### Removed
 
-- Nothing.
+- [#264](https://github.com/zendframework/zend-validator/pull/264) removes support for PHP versions prior to 7.1.0.
 
 ### Fixed
 
diff --git a/composer.json b/composer.json
index 89fa4c7da..076b1c724 100644
--- a/composer.json
+++ b/composer.json
@@ -16,13 +16,15 @@
         "forum": "https://discourse.zendframework.com/c/questions/components"
     },
     "require": {
-        "php": "^5.6 || ^7.0",
+        "php": "^7.1",
         "zendframework/zend-stdlib": "^3.2.1",
         "container-interop/container-interop": "^1.1"
     },
     "require-dev": {
         "phpunit/phpunit": "^6.0.8 || ^5.7.15",
         "psr/http-message": "^1.0",
+        "psr/http-client": "^1.0",
+        "psr/http-factory": "^1.0",
         "zendframework/zend-cache": "^2.6.1",
         "zendframework/zend-coding-standard": "~1.0.0",
         "zendframework/zend-config": "^2.6",
@@ -61,8 +63,8 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.12.x-dev",
-            "dev-develop": "2.13.x-dev"
+            "dev-master": "2.13.x-dev",
+            "dev-develop": "2.14.x-dev"
         },
         "zf": {
             "component": "Zend\\Validator",
diff --git a/composer.lock b/composer.lock
index aa75f44d4..512cece00 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "1a7fd31aa89bfed8ec74f609189ec441",
+    "content-hash": "8e8923c7e2ce24bb8e5adf1c8fada887",
     "packages": [
         {
             "name": "container-interop/container-interop",
@@ -35,6 +35,7 @@
             ],
             "description": "Promoting the interoperability of container objects (DIC, SL, etc.)",
             "homepage": "https://github.com/container-interop/container-interop",
+            "abandoned": "psr/container",
             "time": "2017-02-14T19:40:03+00:00"
         },
         {
@@ -136,27 +137,29 @@
     "packages-dev": [
         {
             "name": "doctrine/instantiator",
-            "version": "1.1.0",
+            "version": "1.3.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/instantiator.git",
-                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda"
+                "reference": "ae466f726242e637cebdd526a7d991b9433bacf1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
-                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/ae466f726242e637cebdd526a7d991b9433bacf1",
+                "reference": "ae466f726242e637cebdd526a7d991b9433bacf1",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1"
             },
             "require-dev": {
-                "athletic/athletic": "~0.1.8",
+                "doctrine/coding-standard": "^6.0",
                 "ext-pdo": "*",
                 "ext-phar": "*",
-                "phpunit/phpunit": "^6.2.3",
-                "squizlabs/php_codesniffer": "^3.0.2"
+                "phpbench/phpbench": "^0.13",
+                "phpstan/phpstan-phpunit": "^0.11",
+                "phpstan/phpstan-shim": "^0.11",
+                "phpunit/phpunit": "^7.0"
             },
             "type": "library",
             "extra": {
@@ -181,25 +184,25 @@
                 }
             ],
             "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
-            "homepage": "https://github.com/doctrine/instantiator",
+            "homepage": "https://www.doctrine-project.org/projects/instantiator.html",
             "keywords": [
                 "constructor",
                 "instantiate"
             ],
-            "time": "2017-07-22T11:58:36+00:00"
+            "time": "2019-10-21T16:45:58+00:00"
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.8.1",
+            "version": "1.9.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "3e01bdad3e18354c3dce54466b7fbe33a9f9f7f8"
+                "reference": "579bb7356d91f9456ccd505f24ca8b667966a0a7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3e01bdad3e18354c3dce54466b7fbe33a9f9f7f8",
-                "reference": "3e01bdad3e18354c3dce54466b7fbe33a9f9f7f8",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/579bb7356d91f9456ccd505f24ca8b667966a0a7",
+                "reference": "579bb7356d91f9456ccd505f24ca8b667966a0a7",
                 "shasum": ""
             },
             "require": {
@@ -234,7 +237,7 @@
                 "object",
                 "object graph"
             ],
-            "time": "2018-06-11T23:09:50+00:00"
+            "time": "2019-12-15T19:12:40+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -340,35 +343,33 @@
         },
         {
             "name": "phpdocumentor/reflection-common",
-            "version": "1.0.1",
+            "version": "2.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
-                "reference": "21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6"
+                "reference": "63a995caa1ca9e5590304cd845c15ad6d482a62a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6",
-                "reference": "21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/63a995caa1ca9e5590304cd845c15ad6d482a62a",
+                "reference": "63a995caa1ca9e5590304cd845c15ad6d482a62a",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5"
+                "php": ">=7.1"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.6"
+                "phpunit/phpunit": "~6"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "2.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "phpDocumentor\\Reflection\\": [
-                        "src"
-                    ]
+                    "phpDocumentor\\Reflection\\": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -390,30 +391,30 @@
                 "reflection",
                 "static analysis"
             ],
-            "time": "2017-09-11T18:02:19+00:00"
+            "time": "2018-08-07T13:53:10+00:00"
         },
         {
             "name": "phpdocumentor/reflection-docblock",
-            "version": "4.3.0",
+            "version": "4.3.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
-                "reference": "94fd0001232e47129dd3504189fa1c7225010d08"
+                "reference": "2ecaa9fef01634c83bfa8dc1fe35fb5cef223a62"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/94fd0001232e47129dd3504189fa1c7225010d08",
-                "reference": "94fd0001232e47129dd3504189fa1c7225010d08",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/2ecaa9fef01634c83bfa8dc1fe35fb5cef223a62",
+                "reference": "2ecaa9fef01634c83bfa8dc1fe35fb5cef223a62",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.0",
-                "phpdocumentor/reflection-common": "^1.0.0",
-                "phpdocumentor/type-resolver": "^0.4.0",
+                "phpdocumentor/reflection-common": "^1.0.0 || ^2.0.0",
+                "phpdocumentor/type-resolver": "~0.4 || ^1.0.0",
                 "webmozart/assert": "^1.0"
             },
             "require-dev": {
-                "doctrine/instantiator": "~1.0.5",
+                "doctrine/instantiator": "^1.0.5",
                 "mockery/mockery": "^1.0",
                 "phpunit/phpunit": "^6.4"
             },
@@ -441,41 +442,40 @@
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2017-11-30T07:14:17+00:00"
+            "time": "2019-12-20T13:40:23+00:00"
         },
         {
             "name": "phpdocumentor/type-resolver",
-            "version": "0.4.0",
+            "version": "1.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpDocumentor/TypeResolver.git",
-                "reference": "9c977708995954784726e25d0cd1dddf4e65b0f7"
+                "reference": "2e32a6d48972b2c1976ed5d8967145b6cec4a4a9"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/9c977708995954784726e25d0cd1dddf4e65b0f7",
-                "reference": "9c977708995954784726e25d0cd1dddf4e65b0f7",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/2e32a6d48972b2c1976ed5d8967145b6cec4a4a9",
+                "reference": "2e32a6d48972b2c1976ed5d8967145b6cec4a4a9",
                 "shasum": ""
             },
             "require": {
-                "php": "^5.5 || ^7.0",
-                "phpdocumentor/reflection-common": "^1.0"
+                "php": "^7.1",
+                "phpdocumentor/reflection-common": "^2.0"
             },
             "require-dev": {
-                "mockery/mockery": "^0.9.4",
-                "phpunit/phpunit": "^5.2||^4.8.24"
+                "ext-tokenizer": "^7.1",
+                "mockery/mockery": "~1",
+                "phpunit/phpunit": "^7.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "1.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "phpDocumentor\\Reflection\\": [
-                        "src/"
-                    ]
+                    "phpDocumentor\\Reflection\\": "src"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -488,42 +488,43 @@
                     "email": "me@mikevanriel.com"
                 }
             ],
-            "time": "2017-07-14T14:27:02+00:00"
+            "description": "A PSR-5 based resolver of Class names, Types and Structural Element Names",
+            "time": "2019-08-22T18:11:29+00:00"
         },
         {
             "name": "phpspec/prophecy",
-            "version": "1.8.0",
+            "version": "1.10.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpspec/prophecy.git",
-                "reference": "4ba436b55987b4bf311cb7c6ba82aa528aac0a06"
+                "reference": "cbe1df668b3fe136bcc909126a0f529a78d4cbbc"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/4ba436b55987b4bf311cb7c6ba82aa528aac0a06",
-                "reference": "4ba436b55987b4bf311cb7c6ba82aa528aac0a06",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/cbe1df668b3fe136bcc909126a0f529a78d4cbbc",
+                "reference": "cbe1df668b3fe136bcc909126a0f529a78d4cbbc",
                 "shasum": ""
             },
             "require": {
                 "doctrine/instantiator": "^1.0.2",
                 "php": "^5.3|^7.0",
-                "phpdocumentor/reflection-docblock": "^2.0|^3.0.2|^4.0",
-                "sebastian/comparator": "^1.1|^2.0|^3.0",
+                "phpdocumentor/reflection-docblock": "^2.0|^3.0.2|^4.0|^5.0",
+                "sebastian/comparator": "^1.2.3|^2.0|^3.0",
                 "sebastian/recursion-context": "^1.0|^2.0|^3.0"
             },
             "require-dev": {
-                "phpspec/phpspec": "^2.5|^3.2",
+                "phpspec/phpspec": "^2.5 || ^3.2",
                 "phpunit/phpunit": "^4.8.35 || ^5.7 || ^6.5 || ^7.1"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.8.x-dev"
+                    "dev-master": "1.10.x-dev"
                 }
             },
             "autoload": {
-                "psr-0": {
-                    "Prophecy\\": "src/"
+                "psr-4": {
+                    "Prophecy\\": "src/Prophecy"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -551,7 +552,7 @@
                 "spy",
                 "stub"
             ],
-            "time": "2018-08-05T17:53:17+00:00"
+            "time": "2019-12-22T21:05:45+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -804,16 +805,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "6.5.13",
+            "version": "6.5.14",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "0973426fb012359b2f18d3bd1e90ef1172839693"
+                "reference": "bac23fe7ff13dbdb461481f706f0e9fe746334b7"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/0973426fb012359b2f18d3bd1e90ef1172839693",
-                "reference": "0973426fb012359b2f18d3bd1e90ef1172839693",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/bac23fe7ff13dbdb461481f706f0e9fe746334b7",
+                "reference": "bac23fe7ff13dbdb461481f706f0e9fe746334b7",
                 "shasum": ""
             },
             "require": {
@@ -884,7 +885,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2018-09-08T15:10:43+00:00"
+            "time": "2019-02-01T05:22:47+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
@@ -992,6 +993,107 @@
             ],
             "time": "2016-08-06T20:24:11+00:00"
         },
+        {
+            "name": "psr/http-client",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-client.git",
+                "reference": "496a823ef742b632934724bf769560c2a5c7c44e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-client/zipball/496a823ef742b632934724bf769560c2a5c7c44e",
+                "reference": "496a823ef742b632934724bf769560c2a5c7c44e",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0",
+                "psr/http-message": "^1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Client\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for HTTP clients",
+            "homepage": "https://github.com/php-fig/http-client",
+            "keywords": [
+                "http",
+                "http-client",
+                "psr",
+                "psr-18"
+            ],
+            "time": "2018-10-30T23:29:13+00:00"
+        },
+        {
+            "name": "psr/http-factory",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-factory.git",
+                "reference": "12ac7fcd07e5b077433f5f2bee95b3a771bf61be"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-factory/zipball/12ac7fcd07e5b077433f5f2bee95b3a771bf61be",
+                "reference": "12ac7fcd07e5b077433f5f2bee95b3a771bf61be",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.0.0",
+                "psr/http-message": "^1.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interfaces for PSR-7 HTTP message factories",
+            "keywords": [
+                "factory",
+                "http",
+                "message",
+                "psr",
+                "psr-17",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "time": "2019-04-30T12:38:16+00:00"
+        },
         {
             "name": "psr/http-message",
             "version": "1.0.1",
@@ -1303,16 +1405,16 @@
         },
         {
             "name": "sebastian/exporter",
-            "version": "3.1.0",
+            "version": "3.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/exporter.git",
-                "reference": "234199f4528de6d12aaa58b612e98f7d36adb937"
+                "reference": "68609e1261d215ea5b21b7987539cbfbe156ec3e"
             },
             "dist": {
                 "type": "zip",
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                 "php": "^5.6 || ^7.0",
                 "zendframework/zend-eventmanager": "^2.6.2 || ^3.0",
-                "zendframework/zend-stdlib": "^2.7 || ^3.0"
+                "zendframework/zend-stdlib": "^3.2.1"
             },
             "require-dev": {
                 "container-interop/container-interop": "^1.1",
                 "mongodb/mongodb": "^1.0.1",
                 "php-mock/php-mock-phpunit": "^1.1.2 || ^2.0",
-                "phpunit/phpunit": "^5.7.5 || >=6.0.13 <6.5.0",
+                "phpunit/phpunit": "^5.7.27 || ^6.5.14 || ^7.5.16",
                 "zendframework/zend-cache": "^2.6.1",
                 "zendframework/zend-coding-standard": "~1.0.0",
                 "zendframework/zend-db": "^2.7",
@@ -2535,8 +2696,8 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.8-dev",
-                    "dev-develop": "2.9-dev"
+                    "dev-master": "2.9.x-dev",
+                    "dev-develop": "2.10.x-dev"
                 },
                 "zf": {
                     "component": "Zend\\Session",
@@ -2552,26 +2713,26 @@
             "license": [
                 "BSD-3-Clause"
             ],
-            "description": "manage and preserve session data, a logical complement of cookie data, across multiple page requests by the same client",
+            "description": "Object-oriented interface to PHP sessions and storage",
             "keywords": [
                 "ZendFramework",
                 "session",
                 "zf"
             ],
-            "time": "2018-02-22T16:33:54+00:00"
+            "time": "2019-10-28T19:40:43+00:00"
         },
         {
             "name": "zendframework/zend-uri",
-            "version": "2.6.1",
+            "version": "2.7.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/zendframework/zend-uri.git",
-                "reference": "3b6463645c6766f78ce537c70cb4fdabee1e725f"
+                "reference": "bfc4a5b9a309711e968d7c72afae4ac50c650083"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/zendframework/zend-uri/zipball/3b6463645c6766f78ce537c70cb4fdabee1e725f",
-                "reference": "3b6463645c6766f78ce537c70cb4fdabee1e725f",
+                "url": "https://api.github.com/repos/zendframework/zend-uri/zipball/bfc4a5b9a309711e968d7c72afae4ac50c650083",
+                "reference": "bfc4a5b9a309711e968d7c72afae4ac50c650083",
                 "shasum": ""
             },
             "require": {
@@ -2586,8 +2747,8 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.6.x-dev",
-                    "dev-develop": "2.7.x-dev"
+                    "dev-master": "2.7.x-dev",
+                    "dev-develop": "2.8.x-dev"
                 }
             },
             "autoload": {
@@ -2605,7 +2766,7 @@
                 "uri",
                 "zf"
             ],
-            "time": "2018-04-30T13:40:08+00:00"
+            "time": "2019-10-07T13:35:33+00:00"
         }
     ],
     "aliases": [],
@@ -2614,7 +2775,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^5.6 || ^7.0"
+        "php": "^7.1"
     },
     "platform-dev": []
 }
diff --git a/docs/book/validators/date.md b/docs/book/validators/date.md
index 83de95a40..fe484722e 100644
--- a/docs/book/validators/date.md
+++ b/docs/book/validators/date.md
@@ -33,3 +33,24 @@ $validator = new Zend\Validator\Date(['format' => 'Y']);
 $validator->isValid('2010'); // returns true
 $validator->isValid('May');  // returns false
 ```
+
+## Strict mode
+
+- **Since 2.13.0**
+
+By default, `Zend\Validator\Date` only validates that it can convert the
+provided value to a valid `DateTime` value.
+
+If you want to require that the date is specified in a specific format, you can
+provide both the [date format](#specifying-a-date-format) and the `strict`
+options. In such a scenario, the value must both be covertable to a `DateTime`
+value **and** be in the same format as provided to the validator. (Generally,
+this will mean the value must be a string.)
+
+```php
+$validator = new Zend\Validator\Date(['format' => 'Y-m-d', 'strict' => true]);
+
+$validator->isValid('2010-10-10'); // returns true
+$validator->isValid(new DateTime('2010-10-10)); // returns false; value is not a string
+$validator->isValid('2010.10.10'); // returns false; format differs
+```
diff --git a/docs/book/validators/file/extension.md b/docs/book/validators/file/extension.md
index e53e21162..bcf89de1b 100644
--- a/docs/book/validators/file/extension.md
+++ b/docs/book/validators/file/extension.md
@@ -14,6 +14,9 @@ The following set of options are supported:
   against which to test.
 - `case`: Boolean indicating whether or not extensions should match case
   sensitively; defaults to `false` (case-insensitive).
+- `allowNonExistentFile`: (**Since 2.13.0**) Boolean indicating whether or not
+  to allow validating a filename for a non-existent file. Defaults to `false`
+  (will not validate non-existent files).
 
 ## Usage Examples
 
diff --git a/docs/book/validators/undisclosed-password.md b/docs/book/validators/undisclosed-password.md
new file mode 100644
index 000000000..badaad823
--- /dev/null
+++ b/docs/book/validators/undisclosed-password.md
@@ -0,0 +1,93 @@
+# Undisclosed Password Validator
+
+- **Since 2.13.0**
+
+`Zend\Validator\UndisclosedPassword` allows you to validate if a given password was found in data breaches using the service [Have I Been Pwned?](https://www.haveibeenpwned.com), in a secure, anonymous way using [K-Anonymity](https://www.troyhunt.com/ive-just-launched-pwned-passwords-version-2) to ensure passwords are not send in full over the wire.
+
+> ### Installation requirements
+> 
+> This validator needs to make a request over HTTP; therefore it requires an HTTP client. The validator provides support only for HTTP clients implementing [PSR-18](https://www.php-fig.org/psr/psr-18/) and [PSR-17](https://www.php-fig.org/psr/psr-17/) request and response factories.
+>
+> To ensure you have these installed before using this validator, run the following:
+>
+> ```bash
+> $ composer require psr/http-client
+> $ composer require psr/http-factory
+> ```
+
+## Basic usage
+
+The validator has three required constructor arguments:
+
+- an HTTP Client that implements `Psr\Http\Client\ClientInterface`
+- a `Psr\Http\Message\RequestFactoryInterface` instance
+- a `Psr\Http\Message\ResponseFactoryInterface` instance
+
+Once you have an instance, you can then pass a password to its `isValid()` method to determine if it has been disclosed in a known data breach.
+
+If the password was found via the service, `isValid()` will return `false`. If the password was not found, `isValid()` will return `true`.
+
+```php
+$validator = new Zend\Validator\UndisclosedPassword(
+    $httpClient, // a PSR-18 HttpClientInterface
+    $requestFactory, // a PSR-17 RequestFactoryInterface
+    $responseFactory // a PSR-17 ResponseFactoryInterface
+);
+
+$result = $validator->isValid('password');
+// $result is FALSE because "password" was found in a data breach
+
+$result = $validator->isValid('8aDk=XiW2E.77tLfuAcB'); 
+// $result is TRUE because "8aDk=XiW2E.77tLfuAcB" was not found in a data breach
+```
+
+## A simple command line example
+
+In this example, I'm using `zendframework/zend-diactoros` to provide HTTP messages, and `php-http/curl-client` as the HTTP client. Let's begin with installation of all required packages:
+
+```bash
+$ composer require \
+    php-http/message \
+    php-http/message-factory \
+    php-http/discovery \
+    php-http/curl-client \
+    zendframework/zend-diactoros \
+    zendframework/zend-validator
+```
+
+Next, I create a file, `undisclosed.php`, where I put my code:
+
+```php
+<?php
+
+namespace Undisclosed;
+
+use Http\Client\Curl\Client;
+use Zend\Diactoros\RequestFactory;
+use Zend\Diactoros\ResponseFactory;
+use Zend\Validator\UndisclosedPassword;
+
+require_once __DIR__ . '/vendor/autoload.php';
+
+
+$requestFactory = new RequestFactory();
+$responseFactory = new ResponseFactory();
+$client = new Client($responseFactory, null);
+
+$undisclosedPassword = new UndisclosedPassword($client, $requestFactory, $responseFactory);
+echo 'Password "password" is ' . ($undisclosedPassword->isValid('password') ? 'not disclosed' : 'disclosed') . PHP_EOL;
+echo 'Password "NVt3MpvQ" is ' . ($undisclosedPassword->isValid('NVt3MpvQ') ? 'not disclosed' : 'disclosed') . PHP_EOL;
+```
+
+To run it, I use the PHP command line interpreter:
+
+```bash
+$ php undisclosed.php
+```
+
+And it gives me the following output:
+
+```bash
+Password "password" is disclosed
+Password "NVt3MpvQ" is not disclosed
+```
diff --git a/mkdocs.yml b/mkdocs.yml
index d7a0d4849..927f7da53 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -35,6 +35,7 @@ nav:
             - Step: validators/step.md
             - StringLength: validators/string-length.md
             - Timezone: validators/timezone.md
+            - UndisclosedPassword: validators/undisclosed-password.md
             - Uri: validators/uri.md
             - Uuid: validators/uuid.md
         - "File Validators":
diff --git a/src/Date.php b/src/Date.php
index bd2fd9070..c096c9653 100644
--- a/src/Date.php
+++ b/src/Date.php
@@ -3,7 +3,7 @@
  * Zend Framework (http://framework.zend.com/)
  *
  * @link      http://github.com/zendframework/zf2 for the canonical source repository
- * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright Copyright (c) 2005-2019 Zend Technologies USA Inc. (http://www.zend.com)
  * @license   http://framework.zend.com/license/new-bsd New BSD License
  */
 
@@ -56,6 +56,11 @@ class Date extends AbstractValidator
      */
     protected $format = self::FORMAT_DEFAULT;
 
+    /**
+     * @var bool
+     */
+    protected $strict = false;
+
     /**
      * Sets validator options
      *
@@ -100,6 +105,17 @@ public function setFormat($format = self::FORMAT_DEFAULT)
         return $this;
     }
 
+    public function setStrict(bool $strict) : self
+    {
+        $this->strict = $strict;
+        return $this;
+    }
+
+    public function isStrict() : bool
+    {
+        return $this->strict;
+    }
+
     /**
      * Returns true if $value is a DateTime instance or can be converted into one.
      *
@@ -110,11 +126,17 @@ public function isValid($value)
     {
         $this->setValue($value);
 
-        if (! $this->convertToDateTime($value)) {
+        $date = $this->convertToDateTime($value);
+        if (! $date) {
             $this->error(self::INVALID_DATE);
             return false;
         }
 
+        if ($this->isStrict() && $date->format($this->getFormat()) !== $value) {
+            $this->error(self::FALSEFORMAT);
+            return false;
+        }
+
         return true;
     }
 
diff --git a/src/File/ExcludeExtension.php b/src/File/ExcludeExtension.php
index 9f8d3e034..60a88f7df 100644
--- a/src/File/ExcludeExtension.php
+++ b/src/File/ExcludeExtension.php
@@ -45,14 +45,18 @@ public function isValid($value, $file = null)
     {
         $fileInfo = $this->getFileInfo($value, $file);
 
-        $this->setValue($fileInfo['filename']);
-
         // Is file readable ?
-        if (empty($fileInfo['file']) || false === is_readable($fileInfo['file'])) {
+        if (! $this->getAllowNonExistentFile()
+            && (empty($fileInfo['file']) || false === is_readable($fileInfo['file']))
+        ) {
+            if (preg_match('/nofile\.mo$/', $fileInfo['file'])) {
+            }
             $this->error(self::NOT_FOUND);
             return false;
         }
 
+        $this->setValue($fileInfo['filename']);
+
         $extension  = substr($fileInfo['filename'], strrpos($fileInfo['filename'], '.') + 1);
         $extensions = $this->getExtension();
 
@@ -61,6 +65,8 @@ public function isValid($value, $file = null)
         } elseif (! $this->getCase()) {
             foreach ($extensions as $ext) {
                 if (strtolower($ext) == strtolower($extension)) {
+                    if (preg_match('/nofile\.mo$/', $fileInfo['file'])) {
+                    }
                     $this->error(self::FALSE_EXTENSION);
                     return false;
                 }
diff --git a/src/File/Extension.php b/src/File/Extension.php
index 0e1cd9ed0..875a48bbc 100644
--- a/src/File/Extension.php
+++ b/src/File/Extension.php
@@ -44,6 +44,7 @@ class Extension extends AbstractValidator
     protected $options = [
         'case'      => false,   // Validate case sensitive
         'extension' => '',      // List of extensions
+        'allowNonExistentFile' => false, // Allow validation even if file does not exist
     ];
 
     /**
@@ -170,6 +171,28 @@ public function addExtension($extension)
         return $this;
     }
 
+    /**
+     * Returns whether or not to allow validation of non-existent files.
+     *
+     * @return bool
+     */
+    public function getAllowNonExistentFile()
+    {
+        return $this->options['allowNonExistentFile'];
+    }
+
+    /**
+     * Sets the flag indicating whether or not to allow validation of non-existent files.
+     *
+     * @param  bool $flag Whether or not to allow validation of non-existent files.
+     * @return self Provides a fluent interface
+     */
+    public function setAllowNonExistentFile($flag)
+    {
+        $this->options['allowNonExistentFile'] = (bool) $flag;
+        return $this;
+    }
+
     /**
      * Returns true if and only if the file extension of $value is included in the
      * set extension list
@@ -182,14 +205,16 @@ public function isValid($value, $file = null)
     {
         $fileInfo = $this->getFileInfo($value, $file);
 
-        $this->setValue($fileInfo['filename']);
-
         // Is file readable ?
-        if (empty($fileInfo['file']) || false === is_readable($fileInfo['file'])) {
+        if (! $this->getAllowNonExistentFile()
+            && (empty($fileInfo['file']) || false === is_readable($fileInfo['file']))
+        ) {
             $this->error(self::NOT_FOUND);
             return false;
         }
 
+        $this->setValue($fileInfo['filename']);
+
         $extension  = substr($fileInfo['filename'], strrpos($fileInfo['filename'], '.') + 1);
         $extensions = $this->getExtension();
 
diff --git a/src/Hostname.php b/src/Hostname.php
index 6823eab12..5b4fdcdc8 100644
--- a/src/Hostname.php
+++ b/src/Hostname.php
@@ -69,7 +69,7 @@ class Hostname extends AbstractValidator
 
     /**
      * Array of valid top-level-domains
-     * IanaVersion 2019081200
+     * IanaVersion 2019122700
      *
      * @see ftp://data.iana.org/TLD/tlds-alpha-by-domain.txt  List of all TLDs by domain
      * @see http://www.iana.org/domains/root/db/ Official list of supported TLDs
@@ -287,7 +287,6 @@ class Hostname extends AbstractValidator
         'career',
         'careers',
         'cars',
-        'cartier',
         'casa',
         'case',
         'caseih',
@@ -320,7 +319,6 @@ class Hostname extends AbstractValidator
         'chintai',
         'christmas',
         'chrome',
-        'chrysler',
         'church',
         'ci',
         'cipriani',
@@ -372,6 +370,7 @@ class Hostname extends AbstractValidator
         'coupon',
         'coupons',
         'courses',
+        'cpa',
         'cr',
         'credit',
         'creditcard',
@@ -433,7 +432,6 @@ class Hostname extends AbstractValidator
         'do',
         'docs',
         'doctor',
-        'dodge',
         'dog',
         'domains',
         'dot',
@@ -443,7 +441,6 @@ class Hostname extends AbstractValidator
         'dubai',
         'duck',
         'dunlop',
-        'duns',
         'dupont',
         'durban',
         'dvag',
@@ -479,7 +476,6 @@ class Hostname extends AbstractValidator
         'eurovision',
         'eus',
         'events',
-        'everbank',
         'exchange',
         'expert',
         'exposed',
@@ -769,12 +765,10 @@ class Hostname extends AbstractValidator
         'kz',
         'la',
         'lacaixa',
-        'ladbrokes',
         'lamborghini',
         'lamer',
         'lancaster',
         'lancia',
-        'lancome',
         'land',
         'landrover',
         'lanxess',
@@ -814,6 +808,7 @@ class Hostname extends AbstractValidator
         'lixil',
         'lk',
         'llc',
+        'llp',
         'loan',
         'loans',
         'locker',
@@ -889,7 +884,6 @@ class Hostname extends AbstractValidator
         'mo',
         'mobi',
         'mobile',
-        'mobily',
         'moda',
         'moe',
         'moi',
@@ -897,7 +891,6 @@ class Hostname extends AbstractValidator
         'monash',
         'money',
         'monster',
-        'mopar',
         'mormon',
         'mortgage',
         'moscow',
@@ -905,7 +898,6 @@ class Hostname extends AbstractValidator
         'motorcycles',
         'mov',
         'movie',
-        'movistar',
         'mp',
         'mq',
         'mr',
@@ -1025,7 +1017,6 @@ class Hostname extends AbstractValidator
         'photography',
         'photos',
         'physio',
-        'piaget',
         'pics',
         'pictet',
         'pictures',
@@ -1227,7 +1218,6 @@ class Hostname extends AbstractValidator
         'spreadbetting',
         'sr',
         'srl',
-        'srt',
         'ss',
         'st',
         'stada',
@@ -1280,7 +1270,6 @@ class Hostname extends AbstractValidator
         'tech',
         'technology',
         'tel',
-        'telefonica',
         'temasek',
         'tennis',
         'teva',
@@ -1340,7 +1329,6 @@ class Hostname extends AbstractValidator
         'ua',
         'ubank',
         'ubs',
-        'uconnect',
         'ug',
         'uk',
         'unicom',
@@ -1393,7 +1381,6 @@ class Hostname extends AbstractValidator
         'walter',
         'wang',
         'wanggou',
-        'warman',
         'watch',
         'watches',
         'weather',
@@ -1524,7 +1511,6 @@ class Hostname extends AbstractValidator
         'موريتانيا',
         'پاکستان',
         'الاردن',
-        'موبايلي',
         'بارت',
         'بھارت',
         'المغرب',
@@ -1556,6 +1542,7 @@ class Hostname extends AbstractValidator
         '大拿',
         'みんな',
         'グーグル',
+        'ευ',
         'ελ',
         '世界',
         '書籍',
diff --git a/src/UndisclosedPassword.php b/src/UndisclosedPassword.php
new file mode 100644
index 000000000..00c305bfe
--- /dev/null
+++ b/src/UndisclosedPassword.php
@@ -0,0 +1,156 @@
+<?php
+/**
+ * @link      http://github.com/zendframework/zend-validator for the canonical source repository
+ * @copyright Copyright (c) 2019 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Validator;
+
+use Psr\Http\Client\ClientExceptionInterface;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\ResponseFactoryInterface;
+
+final class UndisclosedPassword extends AbstractValidator
+{
+    private const HIBP_API_URI = 'https://api.pwnedpasswords.com';
+    private const HIBP_API_REQUEST_TIMEOUT = 300;
+    private const HIBP_CLIENT_USER_AGENT_STRING = 'zend-validator';
+    private const HIBP_CLIENT_ACCEPT_HEADER = 'application/vnd.haveibeenpwned.v2+json';
+    private const HIBP_K_ANONYMITY_HASH_RANGE_LENGTH = 5;
+    private const HIBP_K_ANONYMITY_HASH_RANGE_BASE = 0;
+    private const SHA1_STRING_LENGTH = 40;
+
+    private const PASSWORD_BREACHED = 'passwordBreached';
+    private const NOT_A_STRING = 'wrongInput';
+
+    protected $messageTemplates = [
+        self::PASSWORD_BREACHED =>
+            'The provided password was found in previous breaches, please create another password',
+        self::NOT_A_STRING => 'The provided password is not a string, please provide a correct password',
+    ];
+
+    /**
+     * @var ClientInterface
+     */
+    private $httpClient;
+
+    /**
+     * @var RequestFactoryInterface
+     */
+    private $makeHttpRequest;
+
+    /**
+     * @var ResponseFactoryInterface
+     */
+    private $makeHttpResponse;
+
+    /**
+     * PasswordBreach constructor.
+     */
+    public function __construct(
+        ClientInterface $httpClient,
+        RequestFactoryInterface $makeHttpRequest,
+        ResponseFactoryInterface $makeHttpResponse
+    ) {
+        $this->httpClient = $httpClient;
+        $this->makeHttpRequest = $makeHttpRequest;
+        $this->makeHttpResponse = $makeHttpResponse;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function isValid($value)
+    {
+        if (! is_string($value)) {
+            $this->error(self::NOT_A_STRING);
+            return false;
+        }
+
+        if ($this->isPwnedPassword($value)) {
+            $this->error(self::PASSWORD_BREACHED);
+            return false;
+        }
+
+        return true;
+    }
+
+    private function isPwnedPassword(string $password) : bool
+    {
+        $sha1Hash = $this->hashPassword($password);
+        $rangeHash = $this->getRangeHash($sha1Hash);
+        $hashList = $this->retrieveHashList($rangeHash);
+        return $this->hashInResponse($sha1Hash, $hashList);
+    }
+
+    /**
+     * We use a SHA1 hashed password for checking it against
+     * the breached data set of HIBP.
+     *
+     * @param string $password
+     * @return string
+     */
+    private function hashPassword(string $password) : string
+    {
+        $hashedPassword = \sha1($password);
+        return strtoupper($hashedPassword);
+    }
+
+    /**
+     * Creates a hash range that will be send to HIBP API
+     * applying K-Anonymity
+     *
+     * @param string $passwordHash
+     * @return string
+     * @see https://www.troyhunt.com/enhancing-pwned-passwords-privacy-by-exclusively-supporting-anonymity/
+     */
+    private function getRangeHash(string $passwordHash) : string
+    {
+        return substr($passwordHash, self::HIBP_K_ANONYMITY_HASH_RANGE_BASE, self::HIBP_K_ANONYMITY_HASH_RANGE_LENGTH);
+    }
+
+    /**
+     * Making a connection to the HIBP API to retrieve a
+     * list of hashes that all have the same range as we
+     * provided.
+     *
+     * @param string $passwordRange
+     * @return string
+     * @throws ClientExceptionInterface
+     */
+    private function retrieveHashList(string $passwordRange) : string
+    {
+        $request = $this->makeHttpRequest->createRequest(
+            'GET',
+            self::HIBP_API_URI . '/range/' . $passwordRange
+        );
+
+        $response = $this->httpClient->sendRequest($request);
+        return (string) $response->getBody();
+    }
+
+    /**
+     * Checks if the password is in the response from HIBP
+     *
+     * @param string $sha1Hash
+     * @param string $resultStream
+     * @return bool
+     */
+    private function hashInResponse(string $sha1Hash, string $resultStream) : bool
+    {
+        $data = explode("\r\n", $resultStream);
+        $hashes = array_filter($data, function ($value) use ($sha1Hash) {
+            list($hash, $count) = explode(':', $value);
+            if (0 === strcmp($hash, substr($sha1Hash, self::HIBP_K_ANONYMITY_HASH_RANGE_LENGTH))) {
+                return true;
+            }
+            return false;
+        });
+        if ([] === $hashes) {
+            return false;
+        }
+        return true;
+    }
+}
diff --git a/test/DateTest.php b/test/DateTest.php
index c4398d9ca..cd92484a2 100644
--- a/test/DateTest.php
+++ b/test/DateTest.php
@@ -3,7 +3,7 @@
  * Zend Framework (http://framework.zend.com/)
  *
  * @link      http://github.com/zendframework/zf2 for the canonical source repository
- * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @copyright Copyright (c) 2005-2019 Zend Technologies USA Inc. (http://www.zend.com)
  * @license   http://framework.zend.com/license/new-bsd New BSD License
  */
 
@@ -44,48 +44,55 @@ public function testSetFormatIgnoresNull()
     public function datesDataProvider()
     {
         return [
-            //    date                       format             isValid
-            ['2007-01-01',              null,              true],
-            ['2007-02-28',              null,              true],
-            ['2007-02-29',              null,              false],
-            ['2008-02-29',              null,              true],
-            ['2007-02-30',              null,              false],
-            ['2007-02-99',              null,              false],
-            ['2007-02-99',              'Y-m-d',           false],
-            ['9999-99-99',              null,              false],
-            ['9999-99-99',              'Y-m-d',           false],
-            ['Jan 1 2007',              null,              false],
-            ['Jan 1 2007',              'M j Y',           true],
-            ['asdasda',                 null,              false],
-            ['sdgsdg',                  null,              false],
-            ['2007-01-01something',     null,              false],
-            ['something2007-01-01',     null,              false],
-            ['10.01.2008',              'd.m.Y',           true],
-            ['01 2010',                 'm Y',             true],
-            ['2008/10/22',              'd/m/Y',           false],
-            ['22/10/08',                'd/m/y',           true],
-            ['22/10',                   'd/m/Y',           false],
+            // date                     format             isValid   isValid Strict
+            ['2007-01-01',              null,              true,     true],
+            ['2007-02-28',              null,              true,     true],
+            ['2007-02-29',              null,              false,    false],
+            ['2008-02-29',              null,              true,     true],
+            ['2007-02-30',              null,              false,    false],
+            ['2007-02-99',              null,              false,    false],
+            ['2007-02-99',              'Y-m-d',           false,    false],
+            ['9999-99-99',              null,              false,    false],
+            ['9999-99-99',              'Y-m-d',           false,    false],
+            ['Jan 1 2007',              null,              false,    false],
+            ['Jan 1 2007',              'M j Y',           true,     true],
+            ['asdasda',                 null,              false,    false],
+            ['sdgsdg',                  null,              false,    false],
+            ['2007-01-01something',     null,              false,    false],
+            ['something2007-01-01',     null,              false,    false],
+            ['10.01.2008',              'd.m.Y',           true,     true],
+            ['01 2010',                 'm Y',             true,     true],
+            ['2008/10/22',              'd/m/Y',           false,    false],
+            ['22/10/08',                'd/m/y',           true,     true],
+            ['22/10',                   'd/m/Y',           false,    false],
             // time
-            ['2007-01-01T12:02:55Z',    DateTime::ISO8601, true],
-            ['12:02:55',                'H:i:s',           true],
-            ['25:02:55',                'H:i:s',           false],
+            ['2007-01-01T12:02:55Z',    DateTime::ISO8601, true,     false],
+            ['2007-01-01T12:02:55+0000', DateTime::ISO8601, true,    true],
+            ['12:02:55',                'H:i:s',           true,     true],
+            ['25:02:55',                'H:i:s',           false,    false],
             // int
-            [0,                         null,              true],
-            [1340677235,                null,              true],
+            [0,                         null,              true,     false],
+            [6,                         'd',               true,     false],
+            ['6',                       'd',               true,     false],
+            ['06',                      'd',               true,     true],
+            [123,                       null,              true,     false],
+            [1340677235,                null,              true,     false],
+            [1340677235,                'U',               true,     false],
+            ['1340677235',              'U',               true,     true],
             // 32bit version of php will convert this to double
-            [999999999999,              null,              true],
+            [999999999999,              null,              true,     false],
             // double
-            [12.12,                     null,              false],
+            [12.12,                     null,              false,    false],
             // array
-            [['2012', '06', '25'], null,              true],
+            [['2012', '06', '25'],      null,              true,     false],
             // 0012-06-25 is a valid date, if you want 2012, use 'y' instead of 'Y'
-            [['12', '06', '25'],   null,              true],
-            [['2012', '06', '33'], null,              false],
-            [[1 => 1],             null,              false],
+            [['12', '06', '25'],        null,              true,     false],
+            [['2012', '06', '33'],      null,              false,    false],
+            [[1 => 1],                  null,              false,    false],
             // DateTime
-            [new DateTime(),            null,              true],
+            [new DateTime(),            null,              true,     false],
             // invalid obj
-            [new stdClass(),           null,              false],
+            [new stdClass(),            null,              false,    false],
         ];
     }
 
@@ -100,6 +107,18 @@ public function testBasic($input, $format, $result)
         $this->assertEquals($result, $this->validator->isValid($input));
     }
 
+    /**
+     * @dataProvider datesDataProvider
+     *
+     * @param mixed $input
+     */
+    public function testBasicStrictMode($input, ?string $format, bool $result, bool $resultStrict) : void
+    {
+        $this->validator->setStrict(true);
+        $this->validator->setFormat($format);
+        $this->assertSame($resultStrict, $this->validator->isValid($input));
+    }
+
     public function testDateTimeImmutable()
     {
         $this->assertTrue($this->validator->isValid(new DateTimeImmutable()));
diff --git a/test/File/ExcludeExtensionTest.php b/test/File/ExcludeExtensionTest.php
index 5ac2a2243..b7eeb344e 100644
--- a/test/File/ExcludeExtensionTest.php
+++ b/test/File/ExcludeExtensionTest.php
@@ -38,6 +38,7 @@ public function basicBehaviorDataProvider()
         $noFileTests = [
             //    Options, isValid Param, Expected value, message
             ['mo', $testFile, false, 'fileExcludeExtensionNotFound'],
+            [['extension' => 'gif', 'allowNonExistentFile' => true], $testFile, true, ''],
         ];
 
         // Dupe data in File Upload format
diff --git a/test/File/ExtensionTest.php b/test/File/ExtensionTest.php
index 3b6231f19..01cb69e38 100644
--- a/test/File/ExtensionTest.php
+++ b/test/File/ExtensionTest.php
@@ -38,6 +38,7 @@ public function basicBehaviorDataProvider()
         $noFileTests = [
             //    Options, isValid Param, Expected value, message
             ['mo', $testFile, false, 'fileExtensionNotFound'],
+            [['extension' => 'mo', 'allowNonExistentFile' => true], $testFile, true, ''],
         ];
 
         // Dupe data in File Upload format
@@ -49,6 +50,8 @@ public function basicBehaviorDataProvider()
             ];
             $testData[] = [$data[0], $fileUpload, $data[2], $data[3]];
         }
+
+
         return $testData;
     }
 
diff --git a/test/File/_files/magic.mime b/test/File/_files/magic.mime
index f1d242d72..40b1370e4 100644
--- a/test/File/_files/magic.mime
+++ b/test/File/_files/magic.mime
@@ -167,7 +167,7 @@
 # depending on version magic continues with 0x93453E6139FA (V 4.0)
 # 0x9445376139FA (V 3.90)
 # 0x9445366139FA (V 3.80)
-# this is from source (http://www.adrift.org.uk/) and I have some taf
+# this is from source (http://www.adrift.co/) and I have some taf
 # files, and checked them.
 #0	belong	0x3C423FC9
 #>4	belong	0x6A87C2CF	Adrift game file
@@ -1055,7 +1055,7 @@
 >0	byte		x		GameCube movie,
 >0x34	ubeshort	x		%d x
 >0x36	ubeshort	x		%d,
->0x26	ubeshort	x		%dµs,
+>0x26	ubeshort	x		%dµs,
 >0x42	ubeshort	0		no audio
 >0x42	ubeshort	>0		%dHz audio
 
@@ -1612,7 +1612,7 @@
 # AMGC
 0	string	\xad6" AMGC archive data
 # NuLIB
-0	string	NõFélå NuLIB archive data
+0	string	NõFélå NuLIB archive data
 # PakLeo
 0	string	LEOLZW PAKLeo archive data
 # ChArc
@@ -1624,7 +1624,7 @@
 # Freeze
 0	string	\x1f\x9f\x4a\x10\x0a Freeze archive data
 # KBoom
-0	string	¨MP¨ KBoom archive data
+0	string	¨MP¨ KBoom archive data
 # NSQ, must go after CDC Codec
 0	string	\x76\xff NSQ archive data
 # DPA
@@ -1662,7 +1662,7 @@
 # MP3 (archiver, not lossy audio compression)
 0	string	MP3\x1a MP3-Archiver archive data
 # ZET
-0	string	OZÝ ZET archive data
+0	string	OZÝ ZET archive data
 # TSComp
 0	string	\x65\x5d\x13\x8c\x08\x01\x03\x00 TSComp archive data
 # ARQ
@@ -1693,7 +1693,7 @@
 # Xtreme
 0	string	ULEB\0 Xtreme archive data
 # Pack Magic
-0	string	@â\1\0 Pack Magic archive data
+0	string	@â\1\0 Pack Magic archive data
 # BTS
 0	belong&0xfeffffff	0x1a034465 BTS archive data
 # ELI 5750
@@ -1829,7 +1829,7 @@
 # XPack Data
 0	string	xpa XPack archive data
 # XPack Single Data
-0	string	Í\ jm XPack single archive data
+0	string	Í\ jm XPack single archive data
 
 # TODO: missing due to unknown magic/magic at end of file:
 #DWC
@@ -2814,7 +2814,7 @@
 >>12		ulelong		x		\b, sample rate %d
 
 # adlib sound files
-# From Gürkan Sengün <gurkan@linuks.mine.nu>, http://www.linuks.mine.nu
+# From Gürkan Sengün <gurkan@linuks.mine.nu>, http://www.linuks.mine.nu
 0    	string		RAWADATA	RdosPlay RAW
 
 1068	string		RoR		AMUSIC Adlib Tracker
@@ -3972,7 +3972,7 @@
 >113	string	x		(%s)
 
 #------------------------------------------------------------------------------
-# Microsoft Xbox executables .xbe (Esa Hyytiä <ehyytia@cc.hut.fi>)
+# Microsoft Xbox executables .xbe (Esa Hyytiä <ehyytia@cc.hut.fi>)
 0       string          XBEH            XBE, Microsoft Xbox executable
 # probabilistic checks whether signed or not
 >0x0004 ulelong =0x0
@@ -4008,7 +4008,7 @@
 # From: Serge van den Boom <svdb@stack.nl>
 0	string		\x01ZZZZZ\x01	3DO "Opera" file system
 
-# From Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu
+# From Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu
 0	string		GBS		Nintendo Gameboy Music/Audio Data
 12	string		GameBoy\ Music\ Module	Nintendo Gameboy Music Module
 
@@ -6468,8 +6468,8 @@
 #        10	SS, 8 SPT
 #        11	DS, 8 SPT
 #
-#  11111001	Double density 3� floppy disk, high density 5�
-#  11110000	High density 3� floppy disk
+#  11111001	Double density 3½ floppy disk, high density 5¼
+#  11110000	High density 3½ floppy disk
 #  11111000	Hard disk any format
 #
 
@@ -6887,7 +6887,7 @@
 0	string		OTTO		OpenType font data
 !:mime application/vnd.ms-opentype
 
-# Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu 
+# Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu 
 0	string		SplineFontDB:	Spline Font Database 
 !:mime application/vnd.font-fontforge-sfd
 >14	string		x		version %s
@@ -8641,7 +8641,7 @@
 >5	byte	0x00		(white background)
 >5	byte	0xFF		(black background)
 
-# Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu
+# Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu
 # http://www.atarimax.com/jindroush.atari.org/afmtatr.html
 0	leshort	0x0296		Atari ATR image
 
@@ -9039,7 +9039,7 @@
 
 # rom: file(1) magic for BIOS ROM Extensions found in intel machines
 #      mapped into memory between 0xC0000 and 0xFFFFF
-# From Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu
+# From Gürkan Sengün <gurkan@linuks.mine.nu>, www.linuks.mine.nu
 0        beshort         0x55AA       BIOS (ia32) ROM Ext.
 >5       string          USB          USB
 >7       string          LDR          UNDI image
@@ -9504,7 +9504,7 @@
 #
 # Linux kernel boot images, from Albert Cahalan <acahalan@cs.uml.edu>
 # and others such as Axel Kohlmeyer <akohlmey@rincewind.chemie.uni-ulm.de>
-# and Nicol�s Lichtmaier <nick@debian.org>
+# and Nicolás Lichtmaier <nick@debian.org>
 # All known start with: b8 c0 07 8e d8 b8 00 90 8e c0 b9 00 01 29 f6 29
 # Linux kernel boot images (i386 arch) (Wolfram Kleff)
 514	string		HdrS		Linux kernel
@@ -9527,10 +9527,10 @@
 >0x1e3		string	Loading		version 1.3.79 or older
 >0x1e9		string	Loading		from prehistoric times
 
-# System.map files - Nicol�s Lichtmaier <nick@debian.org>
+# System.map files - Nicolás Lichtmaier <nick@debian.org>
 8	search/1	\ A\ _text	Linux kernel symbol map text
 
-# LSM entries - Nicol�s Lichtmaier <nick@debian.org>
+# LSM entries - Nicolás Lichtmaier <nick@debian.org>
 0	search/1	Begin3	Linux Software Map entry text
 0	search/1	Begin4	Linux Software Map entry text (new format)
 
@@ -11718,7 +11718,7 @@
 # natinst:  file(1) magic for National Instruments Code Files
 
 #
-# From <egamez@fcfm.buap.mx> Enrique G�mez-Flores
+# From <egamez@fcfm.buap.mx> Enrique Gámez-Flores
 # version 1
 # Many formats still missing, we use, for the moment LabVIEW
 # We guess VXI format file. VISA, LabWindowsCVI, BridgeVIEW, etc, are missing
@@ -12933,7 +12933,7 @@
 >4	belong	=2		\b, version 2
 
 # Type: Git index file
-# From: Frédéric Brière <fbriere@fbriere.net>
+# From: Frédéric Brière <fbriere@fbriere.net>
 0	string	DIRC		Git index
 >4	belong	>0		\b, version %d
 >>8	belong	>0		\b, %d entries
@@ -12962,7 +12962,7 @@
 #
 #	http://www.seanet.com/users/matts/riffmci/riffmci.htm
 #
-# AVI section extended by Patrik R�dman <patrik+file-magic@iki.fi>
+# AVI section extended by Patrik Rådman <patrik+file-magic@iki.fi>
 #
 0	string		RIFF		RIFF (little-endian) data
 # RIFF Palette format
@@ -15809,7 +15809,7 @@
 512	string		R\0o\0o\0t\0	Hangul (Korean) Word Processor File 2000
 !:mime	application/x-hwp
 
-# CosmicBook, from Beno�t Rouits
+# CosmicBook, from Benoît Rouits
 0       string  CSBK    Ted Neslson's CosmicBook hypertext file
 
 2       string  EYWR    AmigaWriter file
diff --git a/test/TestAsset/HttpClientException.php b/test/TestAsset/HttpClientException.php
new file mode 100644
index 000000000..414c6c65b
--- /dev/null
+++ b/test/TestAsset/HttpClientException.php
@@ -0,0 +1,11 @@
+<?php
+
+
+namespace ZendTest\Validator\TestAsset;
+
+use Psr\Http\Client\ClientExceptionInterface;
+
+class HttpClientException extends \Exception implements ClientExceptionInterface
+{
+
+}
diff --git a/test/UndisclosedPasswordTest.php b/test/UndisclosedPasswordTest.php
new file mode 100644
index 000000000..7de06f680
--- /dev/null
+++ b/test/UndisclosedPasswordTest.php
@@ -0,0 +1,225 @@
+<?php
+/**
+ * @link      http://github.com/zendframework/zend-validator for the canonical source repository
+ * @copyright Copyright (c) 2019 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace ZendTest\Validator;
+
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Client\ClientExceptionInterface;
+use Psr\Http\Client\ClientInterface;
+use Psr\Http\Message\RequestFactoryInterface;
+use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\ResponseFactoryInterface;
+use Psr\Http\Message\ResponseInterface;
+use ReflectionClass;
+use Zend\Validator\UndisclosedPassword;
+use ZendTest\Validator\TestAsset\HttpClientException;
+
+class UndisclosedPasswordTest extends TestCase
+{
+    /**
+     * @var ClientInterface
+     */
+    private $httpClient;
+
+    /**
+     * @var RequestInterface
+     */
+    private $httpRequest;
+
+    /**
+     * @var ResponseInterface
+     */
+    private $httpResponse;
+
+    /**
+     * @var UndisclosedPassword
+     */
+    private $validator;
+
+    /**
+     * @inheritDoc
+     */
+    public function setUp()
+    {
+        $this->httpClient = $this->getMockBuilder(ClientInterface::class)
+            ->getMockForAbstractClass();
+        $this->httpRequest = $this->getMockBuilder(RequestFactoryInterface::class)
+            ->getMockForAbstractClass();
+        $this->httpResponse = $this->getMockBuilder(ResponseInterface::class)
+            ->getMockForAbstractClass();
+        $responseFactoryInterface = $this->getMockBuilder(ResponseFactoryInterface::class)
+            ->getMockForAbstractClass();
+
+        $this->validator = new UndisclosedPassword(
+            $this->httpClient,
+            $this->httpRequest,
+            $responseFactoryInterface
+        );
+    }
+
+    /**
+     * @inheritDoc
+     */
+    protected function tearDown()
+    {
+        $this->httpClient = null;
+    }
+
+    /**
+     * @param string|object $classOrInstance
+     * @return mixed
+     */
+    public function getConstant(string $constant, $classOrInstance)
+    {
+        $r = new ReflectionClass($classOrInstance);
+        return $r->getConstant($constant);
+    }
+
+    /**
+     * Data provider returning good, strong and unseen
+     * passwords to be used in the validator.
+     *
+     * @return array
+     */
+    public function goodPasswordProvider()
+    {
+        return [
+            ['ABi$B47es.Pfg3n9PjPi'],
+            ['potence tipple would frisk shoofly'],
+        ];
+    }
+
+    /**
+     * Data provider for most common used passwords
+     *
+     * @return array
+     * @see https://en.wikipedia.org/wiki/List_of_the_most_common_passwords
+     */
+    public function seenPasswordProvider()
+    {
+        return [
+            ['123456'],
+            ['password'],
+            ['123456789'],
+            ['12345678'],
+            ['12345'],
+        ];
+    }
+
+    /**
+     * Testing that we reject invalid password types
+     *
+     * @covers \Zend\Validator\UndisclosedPassword
+     * @covers \Zend\Validator\AbstractValidator
+     * @todo Can be replaced by a \TypeError being thrown in PHP 7.0 or up
+     */
+    public function testValidationFailsForInvalidInput()
+    {
+        $this->assertFalse($this->validator->isValid(true));
+        $this->assertFalse($this->validator->isValid((new \stdClass())));
+        $this->assertFalse($this->validator->isValid(['foo']));
+    }
+
+    /**
+     * Test that a given password was not found in the HIBP
+     * API service.
+     *
+     * @param string $password
+     *
+     * @covers \Zend\Validator\UndisclosedPassword
+     * @dataProvider goodPasswordProvider
+     */
+    public function testStrongUnseenPasswordsPassValidation($password)
+    {
+        $this->httpResponse->method('getBody')
+            ->will($this->returnCallback(function () use ($password) {
+                $hash = \sha1('zend-validator');
+                return sprintf(
+                    '%s:%d',
+                    strtoupper(substr($hash, $this->getConstant(
+                        'HIBP_K_ANONYMITY_HASH_RANGE_LENGTH',
+                        UndisclosedPassword::class
+                    ))),
+                    rand(0, 100000)
+                );
+            }));
+        $this->httpClient->method('sendRequest')
+            ->will($this->returnValue($this->httpResponse));
+
+        $this->assertTrue($this->validator->isValid($password));
+    }
+
+    /**
+     * Test that a given password was already seen in the HIBP
+     * AP service.
+     *
+     * @param string $password
+     * @dataProvider seenPasswordProvider
+     * @covers \Zend\Validator\UndisclosedPassword
+     * @covers \Zend\Validator\AbstractValidator
+     */
+    public function testBreachedPasswordsDoNotPassValidation($password)
+    {
+        $this->httpResponse->method('getBody')
+            ->will($this->returnCallback(function () use ($password) {
+                $hash = \sha1($password);
+                return sprintf(
+                    '%s:%d',
+                    strtoupper(substr($hash, $this->getConstant(
+                        'HIBP_K_ANONYMITY_HASH_RANGE_LENGTH',
+                        UndisclosedPassword::class
+                    ))),
+                    rand(0, 100000)
+                );
+            }));
+        $this->httpClient->method('sendRequest')
+            ->will($this->returnValue($this->httpResponse));
+
+        $this->assertFalse($this->validator->isValid($password));
+    }
+
+    /**
+     * Testing we are setting error messages when a password was found
+     * in the breach database.
+     *
+     * @param string $password
+     * @depends testBreachedPasswordsDoNotPassValidation
+     * @dataProvider seenPasswordProvider
+     * @covers \Zend\Validator\UndisclosedPassword
+     */
+    public function testBreachedPasswordReturnErrorMessages($password)
+    {
+        $this->httpClient->method('sendRequest')
+            ->will($this->throwException(new \Exception('foo')));
+
+        $this->expectException(\Exception::class);
+        $this->validator->isValid($password);
+        $this->fail('Excpected exception was not thrown');
+    }
+
+    /**
+     * Testing that we capture any failures when trying to connect with
+     * the HIBP web service.
+     *
+     * @param string $password
+     * @depends testBreachedPasswordsDoNotPassValidation
+     * @dataProvider seenPasswordProvider
+     * @covers \Zend\Validator\UndisclosedPassword
+     */
+    public function testValidationDegradesGracefullyWhenNoConnectionCanBeMade($password)
+    {
+        $clientException = $this->getMockBuilder(HttpClientException::class)
+            ->getMock();
+        $this->httpClient->method('sendRequest')
+            ->will($this->throwException($clientException));
+
+        $this->expectException(ClientExceptionInterface::class);
+
+        $this->validator->isValid($password);
+        $this->fail('Expected ClientException was not thrown');
+    }
+}