diff --git a/.github/workflows/helm-release.yml b/.github/workflows/helm-release.yml
index 50ae788..ce9587a 100644
--- a/.github/workflows/helm-release.yml
+++ b/.github/workflows/helm-release.yml
@@ -46,7 +46,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@3454372f43399081ed03b604cb2d021dabca52bb # v3.8.2
+        uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3.9.1
 
       - name: Publish and Sign OCI Charts
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 8fc2d1b..b7e47f7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -28,7 +28,7 @@ jobs:
           go-version: '1.23'
           check-latest: true
 
-      - uses: sigstore/cosign-installer@3454372f43399081ed03b604cb2d021dabca52bb # v3.8.2
+      - uses: sigstore/cosign-installer@398d4b0eeef1380460a10c8013a76f728fb906ac # v3.9.1
       - uses: anchore/sbom-action/download-syft@9246b90769f852b3a8921f330c59e0b3f439d6e9 # v0.20.1
       - uses: imjasonh/setup-crane@31b88efe9de28ae0ffa220711af4b60be9435f6e # v0.4