diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index 92886b7..6be420a 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -33,7 +33,11 @@ jobs:
 
       - name: Run Claude Code
         id: claude
-        uses: anthropics/claude-code-action@v1
+        # Pinned to work around anthropics/claude-code-action#1187: v1.0.89
+        # crashes with "ENOENT: no such file or directory, symlink" in
+        # restoreConfigFromBase because CLAUDE.md is a symlink to AGENTS.md.
+        # Revert to @v1 once the fix in #1186 is released.
+        uses: anthropics/claude-code-action@v1.0.88
         with:
           claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}