diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index f684ad4e..a47429db 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -42,7 +42,7 @@ jobs:
           install-only: true
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
       - name: Install syft
         uses: anchore/sbom-action/download-syft@fbfd9c6c189226748411491745178e0c2017392d # v0.20.10
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index ab0c4ce7..a1b393cd 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -39,7 +39,7 @@ jobs:
           install-only: true
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
       - name: Install syft
         uses: anchore/sbom-action/download-syft@fbfd9c6c189226748411491745178e0c2017392d # v0.20.10