diff --git a/.travis.yml b/.travis.yml
index 0f30f48..0df8109 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,6 @@ addons:
       - tidy
 
 php:
-  - 5.5
   - 5.6
   - 7.0
   - 7.1