diff --git a/composer.json b/composer.json
index 7007e9a..be06b74 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         }
     ],
     "require": {
-        "slim/slim": ">=2.3.0",
+        "slim/slim": ">=2.4.0",
         "php": ">=5.3.0"
     },
     "suggest": {