diff --git a/modules/servers/per-server/baldur/services/forgejo-runner.nix b/modules/servers/per-server/baldur/services/forgejo-runner.nix
index 6a8a95d..6905eb0 100644
--- a/modules/servers/per-server/baldur/services/forgejo-runner.nix
+++ b/modules/servers/per-server/baldur/services/forgejo-runner.nix
@@ -41,4 +41,6 @@
       size = 16 * 1024; # 16 GB
     }
   ];
+
+  nix.settings.max-jobs = 1;
 }