diff --git a/config/modules.json b/config/modules.json
index 7e46f1a..68a6c7b 100755
--- a/config/modules.json
+++ b/config/modules.json
@@ -3,7 +3,10 @@
 	"authentification": {
 		"renew": {
 			"description": "Renewal of the cyclic hashing system.",
-			"permission": ["cyclic-hash-system"]
+			"permission": ["cyclic-hash-system"],
+			"parameters": {
+				"hash": { "description": "new hash to store.", "type": "hash" }
+			}
 		}
 	},