diff --git a/.github/workflows/weekly-stable-updates.yml b/.github/workflows/weekly-stable-updates.yml
index 5c70fa5c2..0b17da038 100644
--- a/.github/workflows/weekly-stable-updates.yml
+++ b/.github/workflows/weekly-stable-updates.yml
@@ -86,7 +86,7 @@ jobs:
           --input - <<< '{
           "assignees": ["copilot-swe-agent[bot]"],
           "agent_assignment": {
-            "model": "claude-opus-4.8"
+            "model": "gpt-5.6-sol"
           }
         }'
       env: