diff --git a/composer.json b/composer.json
index eee7ed5c7f..a080996139 100755
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,7 @@
         ]
     },
     "require": {
-        "php": ">=5.5",
+        "php": ">=5.6",
         "ext-intl": "*",
         "ext-gd": "*",
         "ext-curl": "*",