diff --git a/.travis.yml b/.travis.yml
index ab5a9d6..594a86d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ script: phpunit
 
 before_script:
   - composer self-update
-  - composer install --dev --optimize-autoloader --prefer-source
+  - composer install --dev --prefer-source
   - mkdir -p build/logs
 
 after_script: