diff --git a/.github/prompts/similar_issues.prompt.yml b/.github/prompts/similar_issues.prompt.yml
index 78db06d2f..fb10ab4c6 100644
--- a/.github/prompts/similar_issues.prompt.yml
+++ b/.github/prompts/similar_issues.prompt.yml
@@ -16,7 +16,7 @@ messages:
       Title: {{issue_title}}
       Body:
       {{issue_body}}
-model: openai/gpt-5
+model: openai/gpt-4.1
 responseFormat: json_schema
 jsonSchema: |-
   {