diff --git a/.github/workflows/containers.yml b/.github/workflows/containers.yml
index 6710abf..05a619e 100644
--- a/.github/workflows/containers.yml
+++ b/.github/workflows/containers.yml
@@ -123,7 +123,7 @@ jobs:
                   password: ${{ secrets.GITHUB_TOKEN }}
 
             # Sign container
-            - uses: sigstore/cosign-installer@v3.9.2
+            - uses: sigstore/cosign-installer@v4.0.0
               if: github.event_name != 'pull_request'
 
             - name: Sign container image