diff --git a/api/v1/openapi.yaml b/api/v1/openapi.yaml
index 4631db9..ea06188 100644
--- a/api/v1/openapi.yaml
+++ b/api/v1/openapi.yaml
@@ -155,6 +155,8 @@ components:
         days:
           type: integer
           format: int32
+          minimum: 1
+          maximum: 5
       required:
         - name
         - days