diff --git a/system/configuration.nix b/system/configuration.nix
index 25038d5..25b240f 100644
--- a/system/configuration.nix
+++ b/system/configuration.nix
@@ -3,7 +3,9 @@
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
 { config, pkgs, lib, ... }:
-
+let
+  unstable-pkgs = import <nixos-unstable> { config = { allowUnfree = true; }; };
+in
 {
   imports =
     [ # Include the results of the hardware scan.
@@ -278,7 +280,7 @@
 #  ];
 
   services.mongodb = {
-    package = pkgs.mongodb-5_0;
+    package = unstable-pkgs.mongodb-5_0;
     enable = true;
     dbpath = "/tmp/mongodb";
   };