diff --git a/nix/flake.lock b/nix/flake.lock
index 81fee41..9ee01b7 100644
--- a/nix/flake.lock
+++ b/nix/flake.lock
@@ -57,7 +57,8 @@
         "home-manager": "home-manager",
         "master": "master",
         "nixpkgs": "nixpkgs",
-        "sops-nix": "sops-nix"
+        "sops-nix": "sops-nix",
+        "testpkgs": "testpkgs"
       }
     },
     "sops-nix": {
@@ -79,6 +80,22 @@
         "repo": "sops-nix",
         "type": "github"
       }
+    },
+    "testpkgs": {
+      "locked": {
+        "lastModified": 1733788258,
+        "narHash": "sha256-1vwUQvcs/pzRIg7Mo+QcE6ZavQWyjJP502n43b4VsGQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "248081c4729259c3add830d502779c5d04cbe074",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "248081c4729259c3add830d502779c5d04cbe074",
+        "type": "github"
+      }
     }
   },
   "root": "root",