diff --git a/gns3server/api/server.py b/gns3server/api/server.py
index da948299..0eda056a 100644
--- a/gns3server/api/server.py
+++ b/gns3server/api/server.py
@@ -55,6 +55,8 @@ def get_application() -> FastAPI:
     origins = [
         "http://127.0.0.1",
         "http://localhost",
+        "http://localhost:4200",
+        "http://127.0.0.1:4200"
         "http://127.0.0.1:8080",
         "http://localhost:8080",
         "http://127.0.0.1:3080",