diff --git a/.forgejo/workflows/update-lock.yml b/.forgejo/workflows/update-lock.yml
index c9bb5e9..7d1a2b8 100644
--- a/.forgejo/workflows/update-lock.yml
+++ b/.forgejo/workflows/update-lock.yml
@@ -20,6 +20,7 @@ jobs:
           git config --global user.email "bot@uku.moe"
           git config --global user.signingkey "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJophqKVpoaeFJP1Wf3SEcfOMObogY6738lx2Ng+LGcQ ukubot"
           git config --global gpg.format "ssh"
+          git config --global commit.gpgsign "true"
 
       - name: Setup SSH Key
         env: