diff --git a/action.yml b/action.yml
index 47e528c..81f6f39 100644
--- a/action.yml
+++ b/action.yml
@@ -25,6 +25,10 @@ runs:
     - shell: bash
       run: |
         docker pull ghcr.io/home-assistant/amd64-builder:${{ steps.version.outputs.version }}
+        cosign verify \
+          --certificate-oidc-issuer https://token.actions.githubusercontent.com \
+          --certificate-identity-regexp https://github.com/home-assistant/builder/.* \
+          ghcr.io/home-assistant/amd64-builder:${{ steps.version.outputs.version }}
 
     - shell: bash
       id: builder