diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a8e9409..208b929 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -100,7 +100,7 @@ jobs:
           github_token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Attest build provenance
-        uses: actions/attest-build-provenance@v2
+        uses: actions/attest-build-provenance@a2bbfa25375fe432b6a289bc6b6cd05ecd0c4c32 # v4
         if: steps.release.outputs.released == 'true'
         with:
           subject-path: "dist/*"