diff --git a/.github/workflows/images_build.yml b/.github/workflows/images_build.yml
index 3fd7b7f33..586c94759 100644
--- a/.github/workflows/images_build.yml
+++ b/.github/workflows/images_build.yml
@@ -141,6 +141,7 @@ jobs:
             index.docker.io:443
             objects.githubusercontent.com:443
             fulcio.sigstore.dev:443
+            tuf-repo-cdn.sigstore.dev:443
             production.cloudflare.docker.com:443
             registry-1.docker.io:443
             yum.oracle.com:443