diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8418586..a31bb92 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -353,7 +353,7 @@ jobs:
       # using Cosign and save the private key as a repository secret in Github for this workflow
       # to consume. For more details, review the image signing section of the README.
       - name: Install Cosign
-        uses: sigstore/cosign-installer@c56c2d3e59e4281cc41dea2217323ba5694b171e # v3.8.0
+        uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3.9.1
         if: github.event_name != 'pull_request' && github.ref == format('refs/heads/{0}', github.event.repository.default_branch)
 
       # Sign the image.