diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 04a4acde7..3697aba9d 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -26,7 +26,7 @@ jobs:
 
       - name: Run Claude Code Review
         id: claude-review
-        uses: anthropics/claude-code-action@v1
+        uses: anthropics/claude-code-action@e763fe78de2db7389e04818a00b5ff8ba13d1360 # v1
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
           plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'