diff --git a/.travis.yml b/.travis.yml
index 2f899dbc..d7f7898a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,13 +26,6 @@ env:
 
 matrix:
   include:
-    - php: 5.5
-      env:
-        - DEPS=lowest
-    - php: 5.5
-      env:
-        - DEPS=latest
-        - CS_CHECK=true
     - php: 5.6
       env:
         - DEPS=lowest
@@ -48,6 +41,7 @@ matrix:
     - php: 7
       env:
         - DEPS=latest
+        - CS_CHECK=true
     - php: 7.1
       env:
         - DEPS=lowest