diff --git a/scripts/mcp-deploy.ts b/scripts/mcp-deploy.ts
index 768dae7..ffd12cb 100644
--- a/scripts/mcp-deploy.ts
+++ b/scripts/mcp-deploy.ts
@@ -21,7 +21,7 @@ async function triggerWorkflow(workflow: string, inputs: Record<string, string>)
   const res = await fetch(`${BASE_URL}/actions/workflows/${workflow}/dispatches`, {
     method: 'POST',
     headers: ghHeaders,
-    body: JSON.stringify({ ref: 'main', inputs }),
+    body: JSON.stringify({ ref: 'stg', inputs }),
   })
   if (!res.ok) throw new Error(`GitHub API error ${res.status}: ${await res.text()}`)
 }