diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index cf0672a..1e6a6a2 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -44,7 +44,7 @@ jobs:
         uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3
+        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
 
       - name: Log in to GitHub Container Registry
         uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4
diff --git a/.github/workflows/semrel-release.yaml b/.github/workflows/semrel-release.yaml
index 64334ae..1f82519 100644
--- a/.github/workflows/semrel-release.yaml
+++ b/.github/workflows/semrel-release.yaml
@@ -159,7 +159,7 @@ jobs:
         uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3
+        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2
 
       - name: Log in to GitHub Container Registry
         uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4