diff --git a/gen/openapi_server/controllers/patchnotes_controller.py b/gen/openapi_server/controllers/patchnotes_controller.py
index 72565da..72e6de5 100644
--- a/gen/openapi_server/controllers/patchnotes_controller.py
+++ b/gen/openapi_server/controllers/patchnotes_controller.py
@@ -167,6 +167,8 @@ def list_patchnotes(since: str | None = None):
         {"$set": {"last_login": today}},
         upsert=True,
     )
+    if since == last_login_collection.find_one({"last_login"}):
+        return Response(json_util.dumps([]), mimetype="application/json", status=200)
 
     return Response(json_util.dumps(docs), mimetype="application/json", status=200)