diff --git a/.github/workflows/build-mytoolbx.yml b/.github/workflows/build-mytoolbx.yml
index 82400d6..537a5a6 100644
--- a/.github/workflows/build-mytoolbx.yml
+++ b/.github/workflows/build-mytoolbx.yml
@@ -86,7 +86,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.3.0
+      - uses: sigstore/cosign-installer@v3.4.0
 
       - name: Sign container image
         if: github.event_name != 'pull_request'