diff --git a/.travis.yml b/.travis.yml
index 0fe492cac774..84f209b3dd32 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ language: php
 sudo: true
 
 php:
-#  - 5.5
-  - 5.6
+  - 5.5.9
+#  - 5.6
 #  - 7.0
 #  - hhvm