diff --git a/composer.json b/composer.json
index 0a39d57..2688a7d 100644
--- a/composer.json
+++ b/composer.json
@@ -14,5 +14,11 @@
         }
     ],
     "minimum-stability": "stable",
-    "require": {}
+    "require": {
+        "potter/container": ">=0.0.1",
+        "potter/controller": ">=0.0.1",
+        "potter/response": ">=0.0.1",
+        "potter/router": ">=0.0.1",
+        "psr/http-message": "^1.1.0"
+    }
 }