diff --git a/.github/workflows/presubmit.yml b/.github/workflows/presubmit.yml
index cac1250b70e8..fb43da1e66fb 100644
--- a/.github/workflows/presubmit.yml
+++ b/.github/workflows/presubmit.yml
@@ -32,4 +32,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           LLM_API_KEY: ${{ secrets.LLM_API_KEY }}
-          LLM_MODEL: "gemini-1.5-flash"
+          LLM_MODEL: "gemini-1.5-flash-latest"  # ✅ updated model version