diff --git a/.forgejo/workflows/update.yml b/.forgejo/workflows/update.yml
index 85b6125..511893e 100644
--- a/.forgejo/workflows/update.yml
+++ b/.forgejo/workflows/update.yml
@@ -6,6 +6,8 @@ jobs:
         runs-on: docker
         steps:
             - uses: actions/checkout@v4
+              with:
+                ref: master
             - uses: https://github.com/DeterminateSystems/nix-installer-action@main
             - run: 'git config --unset-all extensions.worktreeconfig'
             - run: 'nix flake update --commit-lock-file --commit-lockfile-summary "flake.lock: Update"'