diff --git a/.travis.yml b/.travis.yml
index 8c8093bf4..1603ea9ba 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -24,7 +24,6 @@ cache:
         - $HOME/.npm
 
 php:
-    - 5.5
     - 5.6
     - 7.0
     - 7.1
diff --git a/composer.json b/composer.json
index b919f446c..55bd179a8 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
         "issues": "https://github.com/wallabag/wallabag/issues"
     },
     "require": {
-        "php": ">=5.5.9",
+        "php": ">=5.6.0",
         "ext-pcre": "*",
         "ext-dom": "*",
         "ext-curl": "*",
@@ -130,7 +130,7 @@
     "config": {
         "bin-dir": "bin",
         "platform": {
-            "php": "5.5.9"
+            "php": "5.6.0"
         }
     },
     "minimum-stability": "dev",