diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index 978df6b..7c5a9b0 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -162,7 +162,7 @@ jobs:
       - name: Install Cosign
         if: github.event_name != 'pull_request'
         # Abgesichert: entspricht sigstore/cosign-installer@v3.8.1 (Stabile v3/v4-Basis)
-        uses: sigstore/cosign-installer@V4.2.1
+        uses: sigstore/cosign-installer@V4.1.2
 
       - name: Sign container image
         if: github.event_name != 'pull_request' && env.IS_TEST_BUILD == 'false'