diff --git a/flake.lock b/flake.lock
index 978bd031..fdd2ad0d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -76,7 +76,8 @@
         "flake-parts": "flake-parts",
         "mkdocs-numtide": "mkdocs-numtide",
         "nixpkgs": "nixpkgs",
-        "rust-overlay": "rust-overlay"
+        "rust-overlay": "rust-overlay",
+        "systems": "systems"
       }
     },
     "rust-overlay": {
@@ -99,6 +100,21 @@
         "repo": "rust-overlay",
         "type": "github"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1680980633,
+        "narHash": "sha256-mz27VfAExPMYuoWsb1cf++DIyUWWBEbAvXD0BJ+AT/E=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "4e9a51a15ceb27e5141819142a7d2ee827943fc8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index c094b8ad..18915a53 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,6 +2,9 @@
   description = "treefmt";
   # To update all inputs:
   # $ nix flake update --recreate-lock-file
+
+  inputs.systems.url = "github:nix-systems/default";
+
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   inputs.flake-parts.url = "github:hercules-ci/flake-parts";
   inputs.flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
@@ -12,9 +15,9 @@
   inputs.mkdocs-numtide.url = "github:numtide/mkdocs-numtide";
   inputs.mkdocs-numtide.inputs.nixpkgs.follows = "nixpkgs";
 
-  outputs = { self, nixpkgs, flake-parts, mkdocs-numtide, ... }@inputs:
+  outputs = { self, nixpkgs, flake-parts, mkdocs-numtide, systems, ... }@inputs:
     flake-parts.lib.mkFlake { inherit self; } {
-      systems = nixpkgs.lib.systems.flakeExposed;
+      systems = import systems;
       perSystem = { system, pkgs, ... }:
         let
           packages = import ./. {