diff --git a/.github/workflows/pr-duplicate-check.md b/.github/workflows/pr-duplicate-check.md
index 3e0106039..cbcffe842 100644
--- a/.github/workflows/pr-duplicate-check.md
+++ b/.github/workflows/pr-duplicate-check.md
@@ -5,6 +5,7 @@ on:
     types: [opened, synchronize, reopened]
     forks: "*"
 checkout: false
+model: gpt-5.4
 permissions:
   contents: read
   pull-requests: read