diff --git a/.travis.yml b/.travis.yml
index 1abcd0b..8e3f59b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 sudo: false
+dist: xenial
 language: php
 
 php:
@@ -7,16 +8,14 @@ php:
   - 7.1
   - 7.0
   - 5.6
-  - 5.5
 
 matrix:
   fast_finish: true
 
 before_script:
   - git clone --depth=50 --branch=master git://github.com/aimeos/aimeos-core.git ../aimeos-core
-  - cd ../aimeos-core
-  - mv ../ai-monolog ext/
-  - composer require "monolog/monolog" "1.*"
+  - cd ../aimeos-core && mv ../ai-monolog ext/
+  - travis_retry composer require "monolog/monolog" "1.*"
 
 script:
   - vendor/bin/phing -Ddir=ext/ai-monolog coverageext checkext