diff --git a/.travis.yml b/.travis.yml
index 0b414ef1b..0f8dd8bd9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,12 @@ matrix:
 before_install:
   - pecl channel-update pecl.php.net
   - printf "\n" | pecl install imagick
+  - pecl install ast
+
 install: travis_retry composer install --no-interaction --prefer-source
-script: vendor/bin/phpunit --configuration phpunit.xml --coverage-clover clover.xml
+
+script:
+  - vendor/bin/phpunit --configuration phpunit.xml --coverage-clover clover.xml
+  - vendor/bin/phan
+
 after_script: bash <(curl -s https://codecov.io/bash)