diff --git a/gen/openapi_server/__main__.py b/gen/openapi_server/__main__.py
index 4c011c0..2cbf68b 100644
--- a/gen/openapi_server/__main__.py
+++ b/gen/openapi_server/__main__.py
@@ -22,7 +22,7 @@ app.add_middleware(
     allow_origins_regex=[
         "^https://[a-zA-Z0-9.-]+\\.kanzleiapp\\.io$",
         "^https://[a-zA-Z0-9.-]+\\.masasana\\.ai$",
-        "http://localhost:4200" #added a common localhost dev server
+        "^http://localhost:4200$"
     ],
     allow_credentials=True,
     allow_methods=["*"],