diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0b2638e..6a9b089 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -27,7 +27,7 @@ jobs:
         run: |
           cp phpunit.xml.dist phpunit.xml
           composer install
-          composer require --dev phpstan/phpstan
+          composer require --dev phpstan/phpstan:^0.9.2
       - name: Run tests and analytics
         run: |
           vendor/phpunit/phpunit/phpunit -c phpunit.xml tests/
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index b8f464d..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-language: php
-
-php:
-  - 7.0
-  - 7.1
-  - 7.2
-
-branches:
-  only:
-    - master
-    - develop
-    - /^v\d+\.\d+\.\d+$/
-
-cache:
-  directories:
-    - vendor/
-    - $HOME/.composer/cache
-
-before_install:
-  - phpenv config-rm xdebug.ini || echo "XDebug disabled."
-  - composer self-update
-
-install: 
-  - cp phpunit.xml.dist phpunit.xml
-  - composer install
-  - composer require --dev phpstan/phpstan
-
-script:
-  - vendor/phpunit/phpunit/phpunit -c phpunit.xml tests/
-  - vendor/bin/phpstan analyse -l 7 lib/