diff --git a/nixos/modules/services/continuous-integration/buildbot/master.nix b/nixos/modules/services/continuous-integration/buildbot/master.nix
index b4b997201c8f..2b419ec91345 100644
--- a/nixos/modules/services/continuous-integration/buildbot/master.nix
+++ b/nixos/modules/services/continuous-integration/buildbot/master.nix
@@ -28,6 +28,7 @@ let
      schedulers    = [ ${concatStringsSep "," cfg.schedulers} ],
      builders      = [ ${concatStringsSep "," cfg.builders} ],
      services      = [ ${concatStringsSep "," cfg.reporters} ],
+     configurators = [ ${concatStringsSep "," cfg.configurators} ],
     )
     for step in [ ${concatStringsSep "," cfg.factorySteps} ]:
       factory.addStep(step)
@@ -79,6 +80,15 @@ in {
         ];
       };
 
+      configurators = mkOption {
+        type = types.listOf types.str;
+        description = lib.mdDoc "Configurator Steps, see https://docs.buildbot.net/latest/manual/configuration/configurators.html";
+        default = [];
+        example = [
+          "util.JanitorConfigurator(logHorizon=timedelta(weeks=4), hour=12, dayOfWeek=6)"
+        ];
+      };
+
       enable = mkOption {
         type = types.bool;
         default = false;