diff --git a/.travis.yml b/.travis.yml
index 7446f32..97f431d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,10 +8,6 @@ cache:
 
 matrix:
     include:
-        - php: 5.5
-        - php: 5.6
-        - php: 7
-    allow_failures:
         - php: 7
     fast_finish: true
 
diff --git a/composer.json b/composer.json
index a246a5d..dad9e36 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         }
     ],
     "require": {
-        "php": ">=5.5.9 || ^7.0",
+        "php": "^7.0",
         "nikic/php-parser": "~4.0",
         "symfony/console": "^2.6 || ^3.0",
         "symfony/finder": "^2.6 || ^3.0",