diff --git a/.github/workflows/builder.yaml b/.github/workflows/builder.yaml
index b810776..8c4957e 100644
--- a/.github/workflows/builder.yaml
+++ b/.github/workflows/builder.yaml
@@ -114,4 +114,5 @@ jobs:
             --target /data/${{ matrix.addon }} \
             --image "${{ steps.check.outputs.image }}" \
             --docker-hub "ghcr.io/${{ github.repository_owner }}" \
+            --cosign \
             --addon
diff --git a/hassio-vouch-proxy/build.yaml b/hassio-vouch-proxy/build.yaml
index 69c2df3..7ff2ecf 100644
--- a/hassio-vouch-proxy/build.yaml
+++ b/hassio-vouch-proxy/build.yaml
@@ -9,3 +9,6 @@ labels:
   org.opencontainers.image.description: "Auth proxy that using Home Assistant as auth provider"
   org.opencontainers.image.source: "https://github.com/igor-panteleev/hassio-addons"
   org.opencontainers.image.licenses: "MIT"
+cosign:
+  identity: https://github.com/igor-panteleev/hassio-addons/.*
+  base_identity: https://github.com/home-assistant/docker-base/.*