diff --git a/.travis.yml b/.travis.yml
index 501d8ea847d3b0af252a4ee03ada5711728edfa3..ca5aa94fce9a01aa109d475b95cae3f4c9cc97c7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,6 +11,7 @@ before_install:
   - sudo pear update-channels
   - sudo pear upgrade-all
   - sudo pear install --alldeps phpunit/PHPUnit
+  - sudo pear install --force --alldeps phpunit/PHPUnit
 script: 
   - scons
 notifications: