diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index fc265c32..554a0d35 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -285,7 +285,7 @@ jobs:
           sbom: true
 
       - name: Attest GitHub
-        uses: actions/attest-build-provenance@v3
+        uses: actions/attest-build-provenance@v4
         id: attest
         with:
           subject-name: ghcr.io/${{ github.repository_owner }}/netpdf
diff --git a/.github/workflows/docker.yaml b/.github/workflows/docker.yaml
index 1d50ab21..4e569307 100644
--- a/.github/workflows/docker.yaml
+++ b/.github/workflows/docker.yaml
@@ -97,7 +97,7 @@ jobs:
           sbom: true
 
       #- name: Attest Docker Hub
-      #  uses: actions/attest-build-provenance@v3
+      #  uses: actions/attest-build-provenance@v4
       #  id: attest1
       #  with:
       #    subject-name: index.docker.io/masesgroup/netpdf
@@ -105,7 +105,7 @@ jobs:
       #    push-to-registry: true
 
       - name: Attest GitHub
-        uses: actions/attest-build-provenance@v3
+        uses: actions/attest-build-provenance@v4
         id: attest2
         with:
           subject-name: ghcr.io/${{ github.repository_owner }}/netpdf