diff --git a/module.nix b/module.nix
index 8515dcb..630f282 100644
--- a/module.nix
+++ b/module.nix
@@ -3,6 +3,7 @@ let
   inherit (lib)
     mkOption
     mkEnableOption
+    mkPackageOption
     mkIf
     types
   ;
@@ -29,10 +30,11 @@ in {
       type = types.str;
       description = "Synapse server's fqdn";
     };
-    package = self.packages.x86_64-linux.synapse-revitalization;
+    package = mkPackageOption pkgs "synapse-revitalization" {};
   };
 
   config = mkIf (cfg.enable) {
+    nixpkgs.overlays = [ self.overlays.default ];
     systemd.services."synapse-revitalization" =
     let pkg = "${pkgs.synapse-revitalization}/bin/synapse-revitalization";
       script = pkgs.writeShellScript "synapse-revitalization-script" ''