diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..b705137
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,15 @@
+# Do not export those files in the Composer archive (lighter dependency)
+/.craftplugin export-ignore
+/.gitattributes export-ignore
+/.github/ export-ignore
+/.gitignore export-ignore
+/.scrutinizer.yml export-ignore
+/codeception.yml export-ignore
+/composer.lock export-ignore
+/buildchain/ export-ignore
+/resources/ export-ignore
+/src/web/assets/src/
+/tests/ export-ignore
+
+# Auto detect text files and perform LF normalization
+* text=auto
diff --git a/.github/workflows/code-analysis.yaml b/.github/workflows/code-analysis.yaml
new file mode 100644
index 0000000..d4bf3fa
--- /dev/null
+++ b/.github/workflows/code-analysis.yaml
@@ -0,0 +1,40 @@
+name: Code Analysis
+
+on:
+  pull_request: null
+  push:
+    branches:
+      - develop
+  workflow_dispatch:
+permissions:
+  contents: read
+jobs:
+  code_analysis:
+    strategy:
+      fail-fast: false
+      matrix:
+        actions:
+          - name: 'PHPStan'
+            run: composer phpstan
+          - name: 'Coding Standards'
+            run: composer fix-cs
+    name: ${{ matrix.actions.name }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Cache Composer dependencies
+        uses: actions/cache@v4
+        with:
+          path: /tmp/composer-cache
+          key: ${{ runner.os }}-${{ hashFiles('**/composer.lock') }}
+      - name: Setup PHP
+        id: setup-php
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.2
+          extensions: 'ctype,curl,dom,iconv,imagick,intl,json,mbstring,openssl,pcre,pdo,reflection,spl,zip'
+          ini-values: post_max_size=256M, max_execution_time=180, memory_limit=512M
+          tools: composer:v2
+      - name: Install Composer dependencies
+        run: composer install --no-interaction --no-ansi --no-progress
+      - run: ${{ matrix.actions.run }}
diff --git a/.github/workflows/create-release.yml b/.github/workflows/create-release.yml
new file mode 100644
index 0000000..8e33492
--- /dev/null
+++ b/.github/workflows/create-release.yml
@@ -0,0 +1,21 @@
+name: Create Release
+run-name: Create release for ${{ github.event.client_payload.version }}
+
+on:
+  repository_dispatch:
+    types:
+      - craftcms/new-release
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: ncipollo/release-action@v1
+        with:
+          body: ${{ github.event.client_payload.notes }}
+          makeLatest: ${{ github.event.client_payload.latest }}
+          name: ${{ github.event.client_payload.version }}
+          prerelease: ${{ github.event.client_payload.prerelease }}
+          tag: ${{ github.event.client_payload.tag }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e24ac67..6a85760 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,17 @@
 
 All notable changes to this project will be documented in this file.
 
+## 1.12.1 - 2024.04.15
+### Added
+* Stable release for Craft CMS 5
+* Add `phpstan` and `ecs` code linting
+* Add `code-analysis.yaml` GitHub action
+* Add `create-release.yml` for automated released
+
+### Changed
+* PHPstan code cleanup
+* ECS code cleanup
+
 ## 1.12.0 - 2024.01.25
 ### Added
 * Added support for Craft CMS 5
diff --git a/LICENSE.md b/LICENSE.md
index 48dee26..fce0799 100755
--- a/LICENSE.md
+++ b/LICENSE.md
@@ -1,7 +1,7 @@
 The MIT License (MIT)
 
-Copyright (c) 2021 nystudio107
-Copyright (c) 2021 PutYourLightsOn
+Copyright (c) nystudio107
+Copyright (c) PutYourLightsOn
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 
diff --git a/composer.json b/composer.json
index 71597fe..74a9667 100755
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
   "name": "nystudio107/craft-autocomplete",
   "description": "Provides Twig template IDE autocomplete of Craft CMS & plugin variables",
   "type": "yii2-extension",
-  "version": "1.12.0",
+  "version": "1.12.1",
   "keywords": [
     "craft",
     "cms",
@@ -30,7 +30,17 @@
     }
   ],
   "require": {
-    "craftcms/cms": "^3.0.0 || ^4.0.0 || ^5.0.0-alpha.1"
+    "craftcms/cms": "^3.0.0 || ^4.0.0 || ^5.0.0"
+  },
+  "require-dev": {
+    "craftcms/ecs": "dev-main",
+    "craftcms/phpstan": "dev-main",
+    "craftcms/rector": "dev-main"
+  },
+  "scripts": {
+    "phpstan": "phpstan --ansi --memory-limit=1G",
+    "check-cs": "ecs check --ansi",
+    "fix-cs": "ecs check --fix --ansi"
   },
   "config": {
     "allow-plugins": {
diff --git a/ecs.php b/ecs.php
new file mode 100644
index 0000000..85860c2
--- /dev/null
+++ b/ecs.php
@@ -0,0 +1,13 @@
+<?php
+
+use craft\ecs\SetList;
+use Symplify\EasyCodingStandard\Config\ECSConfig;
+
+return static function(ECSConfig $ecsConfig): void {
+    $ecsConfig->paths([
+        __DIR__ . '/src',
+        __FILE__,
+    ]);
+    $ecsConfig->parallel();
+    $ecsConfig->sets([SetList::CRAFT_CMS_4]);
+};
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..9ad1308
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,7 @@
+includes:
+    - %currentWorkingDirectory%/vendor/craftcms/phpstan/phpstan.neon
+
+parameters:
+    level: 5
+    paths:
+        - src
diff --git a/src/Autocomplete.php b/src/Autocomplete.php
index 826496e..e43bdeb 100755
--- a/src/Autocomplete.php
+++ b/src/Autocomplete.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete;
@@ -41,7 +41,7 @@ class Autocomplete extends Module implements BootstrapInterface
     // Constants
     // =========================================================================
 
-    const ID = 'craft-autocomplete';
+    public const ID = 'craft-autocomplete';
 
     /**
      * @event RegisterComponentTypesEvent The event that is triggered when registering
@@ -63,9 +63,9 @@ class Autocomplete extends Module implements BootstrapInterface
      * );
      * ```
      */
-    const EVENT_REGISTER_AUTOCOMPLETE_GENERATORS = 'registerAutocompleteGenerators';
+    public const EVENT_REGISTER_AUTOCOMPLETE_GENERATORS = 'registerAutocompleteGenerators';
 
-    const DEFAULT_AUTOCOMPLETE_GENERATORS = [
+    public const DEFAULT_AUTOCOMPLETE_GENERATORS = [
         AutocompleteVariableGenerator::class,
         AutocompleteTwigExtensionGenerator::class,
     ];
@@ -186,7 +186,7 @@ public function getAllAutocompleteGenerators(): array
         }
 
         $event = new RegisterComponentTypesEvent([
-            'types' => self::DEFAULT_AUTOCOMPLETE_GENERATORS
+            'types' => self::DEFAULT_AUTOCOMPLETE_GENERATORS,
         ]);
         $this->trigger(self::EVENT_REGISTER_AUTOCOMPLETE_GENERATORS, $event);
         $this->allAutocompleteGenerators = $event->types;
diff --git a/src/base/Generator.php b/src/base/Generator.php
index f94ee31..e048a0c 100644
--- a/src/base/Generator.php
+++ b/src/base/Generator.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete\base;
@@ -41,7 +41,7 @@ abstract class Generator implements GeneratorInterface
      * );
      * ```
      */
-    const EVENT_BEFORE_GENERATE = 'beforeGenerate';
+    public const EVENT_BEFORE_GENERATE = 'beforeGenerate';
 
     // Public Static Methods
     // =========================================================================
diff --git a/src/base/GeneratorInterface.php b/src/base/GeneratorInterface.php
index 2adb248..f3c13c4 100644
--- a/src/base/GeneratorInterface.php
+++ b/src/base/GeneratorInterface.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete\base;
@@ -22,9 +22,9 @@ interface GeneratorInterface
     // Constants
     // =========================================================================
 
-    const TEMPLATE_EXTENSION = '.php';
-    const STUBS_EXTENSION = '.php.stub';
-    const STUBS_DIR = DIRECTORY_SEPARATOR . 'stubs';
+    public const TEMPLATE_EXTENSION = '.php';
+    public const STUBS_EXTENSION = '.php.stub';
+    public const STUBS_DIR = DIRECTORY_SEPARATOR . 'stubs';
 
     // Public Static Methods
     // =========================================================================
diff --git a/src/console/controllers/AutocompleteController.php b/src/console/controllers/AutocompleteController.php
index 7b31f1d..40b8c5a 100644
--- a/src/console/controllers/AutocompleteController.php
+++ b/src/console/controllers/AutocompleteController.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete\console\controllers;
diff --git a/src/events/DefineGeneratorValuesEvent.php b/src/events/DefineGeneratorValuesEvent.php
index e418c2a..4550b80 100644
--- a/src/events/DefineGeneratorValuesEvent.php
+++ b/src/events/DefineGeneratorValuesEvent.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete\events;
diff --git a/src/generators/AutocompleteTwigExtensionGenerator.php b/src/generators/AutocompleteTwigExtensionGenerator.php
index b96281b..17e280b 100644
--- a/src/generators/AutocompleteTwigExtensionGenerator.php
+++ b/src/generators/AutocompleteTwigExtensionGenerator.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete\generators;
@@ -29,9 +29,9 @@ class AutocompleteTwigExtensionGenerator extends Generator
     // Constants
     // =========================================================================
 
-    const ELEMENT_ROUTE_EXCLUDES = [
+    public const ELEMENT_ROUTE_EXCLUDES = [
         'matrixblock',
-        'globalset'
+        'globalset',
     ];
 
     // Public Static Methods
@@ -63,13 +63,13 @@ public static function regenerate()
         self::generateInternal();
     }
 
-    // Private Static Methods
+    // Protected Static Methods
     // =========================================================================
 
     /**
      * Core function that generates the autocomplete class
      */
-    private static function generateInternal()
+    protected static function generateInternal()
     {
         $values = [];
         // Iterate through the globals in the Twig context
@@ -136,7 +136,7 @@ private static function generateInternal()
      *
      * @return array
      */
-    private static function elementRouteVariables(): array
+    protected static function elementRouteVariables(): array
     {
         $routeVariables = [];
         $elementTypes = Craft::$app->elements->getAllElementTypes();
@@ -157,7 +157,7 @@ private static function elementRouteVariables(): array
      *
      * @return array
      */
-    private static function globalVariables(): array
+    protected static function globalVariables(): array
     {
         $globalVariables = [];
         // See if the GlobalsExtension class is available (Craft CMS 3.7.8 or later) and use it
@@ -182,7 +182,7 @@ private static function globalVariables(): array
      *
      * @return array
      */
-    private static function overrideValues(): array
+    protected static function overrideValues(): array
     {
         return [
             // Swap in our variable in place of the `craft` variable
diff --git a/src/generators/AutocompleteVariableGenerator.php b/src/generators/AutocompleteVariableGenerator.php
index d9fe639..7435afa 100644
--- a/src/generators/AutocompleteVariableGenerator.php
+++ b/src/generators/AutocompleteVariableGenerator.php
@@ -1,13 +1,13 @@
 <?php
 /**
- * Autocomplete plugin for Craft CMS 3.x
+ * Autocomplete module for Craft CMS
  *
  * Provides Twig template IDE autocomplete of Craft CMS & plugin variables
  *
  * @link      https://nystudio107.com
  * @link      https://putyourlightson.com
- * @copyright Copyright (c) 2021 nystudio107
- * @copyright Copyright (c) 2021 PutYourLightsOn
+ * @copyright Copyright (c) nystudio107
+ * @copyright Copyright (c) PutYourLightsOn
  */
 
 namespace nystudio107\autocomplete\generators;
@@ -18,6 +18,7 @@
 use nystudio107\autocomplete\events\DefineGeneratorValuesEvent;
 use ReflectionClass;
 use ReflectionMethod;
+use ReflectionNamedType;
 use ReflectionProperty;
 use Throwable;
 use yii\base\Event;
@@ -29,11 +30,10 @@
  */
 class AutocompleteVariableGenerator extends Generator
 {
-
     // Constants
     // =========================================================================
 
-    const BEHAVIOR_PROPERTY_EXCLUDES = [
+    public const BEHAVIOR_PROPERTY_EXCLUDES = [
         'owner',
     ];
 
@@ -66,13 +66,13 @@ public static function regenerate()
         static::generateInternal();
     }
 
-    // Private Static Methods
+    // Protected Static Methods
     // =========================================================================
 
     /**
      * Core function that generates the autocomplete class
      */
-    private static function generateInternal()
+    protected static function generateInternal()
     {
         $properties = [];
         $methods = [];
@@ -95,52 +95,48 @@ private static function generateInternal()
                     $reflect = new ReflectionClass($behavior);
                     // Properties
                     foreach ($reflect->getProperties(ReflectionProperty::IS_PUBLIC) as $reflectProp) {
-                        if ($reflectProp) {
-                            // Property name
-                            $reflectPropName = $reflectProp->getName();
-                            // Ensure the property exists only for this class and not any parent class
-                            if (property_exists(get_parent_class($behavior), $reflectPropName)) {
-                                continue;
-                            }
-                            // Do it this way because getType() reflection method is >= PHP 7.4
-                            $reflectPropType = gettype($behavior->$reflectPropName);
-                            switch ($reflectPropType) {
-                                case 'object':
-                                    $properties[$reflectPropName] = get_class($behavior->$reflectPropName);
-                                    break;
-                                default:
-                                    $properties[$reflectPropName] = $reflectPropType;
-                                    break;
-                            }
+                        // Property name
+                        $reflectPropName = $reflectProp->getName();
+                        // Ensure the property exists only for this class and not any parent class
+                        if (property_exists(get_parent_class($behavior), $reflectPropName)) {
+                            continue;
+                        }
+                        // Do it this way because getType() reflection method is >= PHP 7.4
+                        $reflectPropType = gettype($behavior->$reflectPropName);
+                        switch ($reflectPropType) {
+                            case 'object':
+                                $properties[$reflectPropName] = get_class($behavior->$reflectPropName);
+                                break;
+                            default:
+                                $properties[$reflectPropName] = $reflectPropType;
+                                break;
                         }
                     }
                     // Methods
                     foreach ($reflect->getMethods(ReflectionMethod::IS_PUBLIC) as $reflectMethod) {
-                        if ($reflectMethod) {
-                            // Method name
-                            $reflectMethodName = $reflectMethod->getName();
-                            // Ensure the method exists only for this class and not any parent class
-                            if (method_exists(get_parent_class($behavior), $reflectMethodName)) {
-                                continue;
-                            }
-                            // Method return type
-                            $methodReturn = '';
-                            $reflectMethodReturnType = $reflectMethod->getReturnType();
-                            if ($reflectMethodReturnType) {
-                                $methodReturn = ': ' . $reflectMethodReturnType->getName();
-                            }
-                            // Method parameters
-                            $methodParams = [];
-                            foreach ($reflectMethod->getParameters() as $methodParam) {
-                                $paramType = '';
-                                $methodParamType = $methodParam->getType();
-                                if ($methodParamType) {
-                                    $paramType = $methodParamType . ' ';
-                                }
-                                $methodParams[] = $paramType . '$' . $methodParam->getName();
+                        // Method name
+                        $reflectMethodName = $reflectMethod->getName();
+                        // Ensure the method exists only for this class and not any parent class
+                        if (method_exists(get_parent_class($behavior), $reflectMethodName)) {
+                            continue;
+                        }
+                        // Method return type
+                        $methodReturn = '';
+                        $reflectMethodReturnType = $reflectMethod->getReturnType();
+                        if ($reflectMethodReturnType instanceof ReflectionNamedType) {
+                            $methodReturn = ': ' . $reflectMethodReturnType->getName();
+                        }
+                        // Method parameters
+                        $methodParams = [];
+                        foreach ($reflectMethod->getParameters() as $methodParam) {
+                            $paramType = '';
+                            $methodParamType = $methodParam->getType();
+                            if ($methodParamType) {
+                                $paramType = $methodParamType . ' ';
                             }
-                            $methods[$reflectMethodName] = '(' . implode(', ', $methodParams) . ')' . $methodReturn;
+                            $methodParams[] = $paramType . '$' . $methodParam->getName();
                         }
+                        $methods[$reflectMethodName] = '(' . implode(', ', $methodParams) . ')' . $methodReturn;
                     }
                 } catch (\ReflectionException $e) {
                 }