diff --git a/.travis.yml b/.travis.yml
index f9249cb063..56deaddcb7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,31 +14,10 @@ env:
     - COMPOSER_ALLOW_XDEBUG=0
     - SYMFONY_DEPRECATIONS_HELPER='weak_vendors'
 
-jobs:
-  include:
-    # Latest dependencies with all PHP versions
-    - php: 7.1
-    - php: 7.2
-
-    # Ignore the platform requirements for the upcoming PHP version
-    - php: nightly
-      env: COMPOSER_FLAGS='--ignore-platform-reqs'
-
-    # Lowest dependencies with the oldest and latest PHP versions
-    - php: 7.1
-      env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable'
-    - php: 7.2
-      env: COMPOSER_FLAGS='--prefer-lowest --prefer-stable'
-
-  allow_failures:
-    - php: nightly
-
-before_install:
-  - phpenv config-rm xdebug.ini || true
+php: 7.2
 
 install:
-  # To be removed when this is resolved: https://github.com/composer/composer/issues/5355
-  - if [[ "$COMPOSER_FLAGS" == *"--prefer-lowest"* ]]; then composer update --no-interaction --no-suggest; fi
+  - phpenv config-rm xdebug.ini || true
   - composer update $COMPOSER_FLAGS --no-interaction --no-suggest
 
 script:
diff --git a/README.md b/README.md
index 75392c4043..f1732a0cae 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,5 @@
 # Contao 4 calendar bundle
 
-[![](https://img.shields.io/travis/contao/calendar-bundle/master.svg?style=flat-square)](https://travis-ci.org/contao/calendar-bundle/)
 [![](https://img.shields.io/packagist/v/contao/calendar-bundle.svg?style=flat-square)](https://packagist.org/packages/contao/calendar-bundle)
 [![](https://img.shields.io/packagist/dt/contao/calendar-bundle.svg?style=flat-square)](https://packagist.org/packages/contao/calendar-bundle)
 
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index e3cd9f5c33..0000000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-build: off
-shallow_clone: true
-platform: x86
-clone_folder: C:\projects\contao
-
-cache:
-  - '%LOCALAPPDATA%\Composer\files'
-
-init:
-  - SET PATH=C:\tools\php71;%PATH%
-  - SET PHP=1
-  - SET ANSICON=121x90 (121x90)
-  - SET SYMFONY_DEPRECATIONS_HELPER=weak
-
-install:
-  - IF EXIST C:\tools\php71 (SET PHP=0)
-  - IF %PHP%==1 appveyor-retry cinst -y OpenSSL.Light
-  - IF %PHP%==1 appveyor-retry cinst -y php --version 7.1.14
-  - IF %PHP%==1 cd C:\tools\php71
-  - IF %PHP%==1 copy php.ini-production php.ini
-  - IF %PHP%==1 echo date.timezone="UTC" >> php.ini
-  - IF %PHP%==1 echo extension_dir=ext >> php.ini
-  - IF %PHP%==1 echo extension=php_bz2.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_curl.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_fileinfo.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_exif.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_gd2.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_intl.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_mbstring.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_mysqli.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_openssl.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_pdo_mysql.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_soap.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_sockets.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_xmlrpc.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_xsl.dll >> php.ini
-  - cd C:\projects\contao
-  - php -r "readfile('http://getcomposer.org/installer');" | php
-  - php composer.phar update --no-progress --no-suggest --no-interaction --ansi
-
-test_script:
-  - cd C:\projects\contao
-  - vendor\bin\phpunit.bat