diff --git a/.forgejo/workflows/test.yml b/.forgejo/workflows/test.yml
index e6eb3a7..bdb13da 100644
--- a/.forgejo/workflows/test.yml
+++ b/.forgejo/workflows/test.yml
@@ -30,5 +30,7 @@ jobs:
       - name: test
         uses: ./.forgejo/actions/test
 
+      - uses: sigstore/cosign-installer@11086d25041f77fe8fe7b9ea4e48e3b9192b8f19 # v3.1.2
+
       - name: install chart-testing
         uses: helm/chart-testing-action@e6669bcd63d7cb57cb4380c33043eebe5d111992 # v2.6.1