diff --git a/.travis.yml b/.travis.yml
index e0d81b4..f6f8902 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,21 +2,29 @@ language: php
 
 php:
   - 7.1
+  - 7.3
 
 branches:
   only:
     - master
     - dev
+    - /^\d.\d+$/
+
+cache:
+  directories:
+    - $HOME/.composer/cache/files
 
 env:
   matrix:
     - TARGET="phpspec"
+    - TARGET="codestyle"
 
 before_script:
   - COMPOSER_MEMORY_LIMIT=-1 composer install
 
 script:
-  - if [ "$TARGET" == "phpspec" ] ; then ./vendor/bin/phpspec run -n; fi
+  - if [ "$TARGET" == "phpspec" ] ; then ./vendor/bin/phpspec run --format=pretty; fi
+  - if [ "$TARGET" == "codestyle" ] ; then ./vendor/bin/php-cs-fixer fix --dry-run -v --show-progress=estimating; fi
 
 notification:
   email: false