diff --git a/.github/workflows/build-nvidia.yml b/.github/workflows/build-nvidia.yml
index ecbf88ef..8a7e7e45 100644
--- a/.github/workflows/build-nvidia.yml
+++ b/.github/workflows/build-nvidia.yml
@@ -143,7 +143,7 @@ jobs:
       # to consume. For more details, review the image signing section of the README.
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.7.0
+      - uses: sigstore/cosign-installer@v3.8.1
         if: github.event_name != 'pull_request'
 
       - name: Sign container image
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 80062d55..794fc882 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -145,7 +145,7 @@ jobs:
       # to consume. For more details, review the image signing section of the README.
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.7.0
+      - uses: sigstore/cosign-installer@v3.8.1
         if: github.event_name != 'pull_request'
 
       - name: Sign container image