diff --git a/.travis.yml b/.travis.yml
index b7abd6a..45581d1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -34,5 +34,11 @@ after_failure:
 
 before_script:
     # Install Nette Tester & Code Checker
-    - composer update --no-interaction --prefer-source $dependencies
-    - composer create-project nette/code-checker code-checker ~2.2 --no-interaction --prefer-source
+    - travis_retry composer update --no-interaction --prefer-dist $dependencies
+    - travis_retry composer create-project nette/code-checker code-checker ~2.5 --no-interaction
+  
+sudo: false
+
+cache:
+    directories:
+        - $HOME/.composer/cache