diff --git a/.gitea/workflows/hello_world.yaml b/.gitea/workflows/hello_world.yaml
index b8c8a8a..db98c6b 100644
--- a/.gitea/workflows/hello_world.yaml
+++ b/.gitea/workflows/hello_world.yaml
@@ -17,6 +17,7 @@ jobs:
         with:
           pin: ${{ secrets.HSM_USER_PIN }}
           files: .gitea/**
+          public_key: https://emil.lerch.org/serverpublic.pem
       - name: list workflows
         if: always()
         run: ls ${{ github.workspace }}/.gitea/workflows/