diff --git a/.github/workflows/pub-release.yml b/.github/workflows/pub-release.yml
index 193bfd5..e9479d8 100644
--- a/.github/workflows/pub-release.yml
+++ b/.github/workflows/pub-release.yml
@@ -170,7 +170,7 @@ jobs:
                   cat SHA256SUMS
 
             - name: Install cosign
-              uses: sigstore/cosign-installer@3454372f43399081ed03b604cb2d021dabca52bb # v3.8.2
+              uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
 
             - name: Sign artifacts with cosign (keyless)
               run: |