diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index 9dfb406..a7d85e1 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -41,7 +41,7 @@ jobs:
       # https://github.com/sigstore/cosign-installer
       - name: Install cosign
         if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@v2.7.0
+        uses: sigstore/cosign-installer@v3.1.0
 
 
       # Workaround: https://github.com/docker/build-push-action/issues/461