diff --git a/.travis.yml b/.travis.yml
index 0bcf775f1..1e3140cf1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,7 +26,7 @@ matrix:
     - php: 7.0
       env: PHPCS=1 DEFAULT=0
 
-    - php: 5.4
+    - php: 5.5
       env: COVERALLS=1 DEFAULT=0
 
     - php: hhvm