diff --git a/app/cli.py b/app/cli.py
index d794548..820addb 100644
--- a/app/cli.py
+++ b/app/cli.py
@@ -25,7 +25,7 @@ def setup(path, api_server):
     # Create .env file
     with open(os.path.join(repo_name, ".env"), "w") as f:
         content = (
-            f"API_SERVER={api_server}\n"
+            f"UCLOUD_API_SERVER={api_server}\n"
         )
         f.writelines(content)