diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 203f1db..b164af6 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -13,7 +13,7 @@ jobs:
   claude-response:
     runs-on: ubuntu-latest
     steps:
-      - uses: anthropics/claude-code-action@v1
+      - uses: anthropics/claude-code-action@426380f01bad0a17200865605a85cb28926dccbf
         with:
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           # Or use OAuth token instead: