diff --git a/.github/workflows/build-fedora-toolbox.yml b/.github/workflows/build-fedora-toolbox.yml
index 468b1c6..66595f2 100644
--- a/.github/workflows/build-fedora-toolbox.yml
+++ b/.github/workflows/build-fedora-toolbox.yml
@@ -100,7 +100,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.4.0
+      - uses: sigstore/cosign-installer@v3.5.0
         if: github.event_name != 'pull_request'
 
       - name: Sign container image
diff --git a/.github/workflows/build-ubuntu-toolbox.yml b/.github/workflows/build-ubuntu-toolbox.yml
index 815268f..0ebe657 100644
--- a/.github/workflows/build-ubuntu-toolbox.yml
+++ b/.github/workflows/build-ubuntu-toolbox.yml
@@ -102,7 +102,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.4.0
+      - uses: sigstore/cosign-installer@v3.5.0
         if: github.event_name != 'pull_request'
 
       - name: Sign container image