diff --git a/ci/flake-cron.nix b/ci/flake-cron.nix
index 3083e43d..5b2020e4 100644
--- a/ci/flake-cron.nix
+++ b/ci/flake-cron.nix
@@ -120,7 +120,7 @@ with lib; {
                   CACHIX_PUSH=$!
                 fi
                 if [[ -n $OPENSSH_PRIVATE_KEY ]]; then
-                  git add nix/sources.json
+                  git add flake.lock
                   export GIT_{COMMITTER,AUTHOR}_EMAIL=github@kittywit.ch
                   export GIT_{COMMITTER,AUTHOR}_NAME="flake cron job"
                   git commit --message="ci: flake update"