diff --git a/modules/system/boot/systemd-unit-options.nix b/modules/system/boot/systemd-unit-options.nix
index 2efea2fb9e12..239c837c6767 100644
--- a/modules/system/boot/systemd-unit-options.nix
+++ b/modules/system/boot/systemd-unit-options.nix
@@ -83,6 +83,15 @@ rec {
       '';
     };
 
+    restartTriggers = mkOption {
+      default = [];
+      description = ''
+        An arbitrary list of items such as derivations.  If any item
+        in the list changes between reconfigurations, the service will
+        be restarted.
+      '';
+    };
+
   };
 
 
diff --git a/modules/system/boot/systemd.nix b/modules/system/boot/systemd.nix
index c166c1cbf031..d88ac652ae0e 100644
--- a/modules/system/boot/systemd.nix
+++ b/modules/system/boot/systemd.nix
@@ -176,6 +176,7 @@ let
           Before = concatStringsSep " " config.before;
           BindsTo = concatStringsSep " " config.bindsTo;
           PartOf = concatStringsSep " " config.partOf;
+          "X-Restart-Triggers" = toString config.restartTriggers;
         } // optionalAttrs (config.description != "") {
           Description = config.description;
         };