diff --git a/.github/workflows/push-ld.yml b/.github/workflows/push-ld.yml
index 387a41a58..2be72917e 100644
--- a/.github/workflows/push-ld.yml
+++ b/.github/workflows/push-ld.yml
@@ -17,7 +17,7 @@ jobs:
       packages: write
     steps:
       - uses: actions/checkout@v5
-      - uses: sigstore/cosign-installer@v3.10.0
+      - uses: sigstore/cosign-installer@v4.0.0
       - name: Prepare
         id: prep
         run: |
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e0b51e751..a63e48bd0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,7 +33,7 @@ jobs:
         with:
           go-version: 1.25.x
       - uses: fluxcd/flux2/action@main
-      - uses: sigstore/cosign-installer@v3.10.0
+      - uses: sigstore/cosign-installer@v4.0.0
       - name: Prepare
         id: prep
         run: |