diff --git a/.github/workflows/builder.yml b/.github/workflows/builder.yml
index 6d0ef53a5..2ef857f97 100644
--- a/.github/workflows/builder.yml
+++ b/.github/workflows/builder.yml
@@ -132,7 +132,7 @@ jobs:
 
       - name: Install Cosign
         if: needs.init.outputs.publish == 'true'
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
         with:
           cosign-release: "v2.5.3"
 
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 44141f900..779e894c7 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -346,7 +346,7 @@ jobs:
         with:
           python-version: ${{ needs.prepare.outputs.python-version }}
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
         with:
           cosign-release: "v2.5.3"
       - name: Restore Python virtual environment