diff --git a/.github/workflows/chart-publish.yml b/.github/workflows/chart-publish.yml
index 4fd9e22f18..a1f7285df6 100644
--- a/.github/workflows/chart-publish.yml
+++ b/.github/workflows/chart-publish.yml
@@ -26,7 +26,7 @@ jobs:
       BASE_REPO: "ghcr.io/${{ github.repository }}"
     steps:
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
       - name: Checkout
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Go
diff --git a/.github/workflows/releaser.yml b/.github/workflows/releaser.yml
index 3bac4c0a4c..a923ea4aab 100644
--- a/.github/workflows/releaser.yml
+++ b/.github/workflows/releaser.yml
@@ -57,7 +57,7 @@ jobs:
       - name: Install Syft
         uses: anchore/sbom-action/download-syft@8e94d75ddd33f69f691467e42275782e4bfefe84 # v0.20.9
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
       - name: Run GoReleaser
         id: run-goreleaser
         uses: goreleaser/goreleaser-action@e435ccd777264be153ace6237001ef4d979d3a7a # v6.4.0