diff --git a/src/openapi.yml b/src/openapi.yml
index 378c5f4..bfac6a1 100644
--- a/src/openapi.yml
+++ b/src/openapi.yml
@@ -9,7 +9,7 @@ info:
   license:
     name: MIT
     url: https://github.com/d-yoshi/redmine-openapi/blob/main/LICENSE
-  version: 0.13.3
+  version: 0.13.4
 
 servers:
   - url: /