diff --git a/flake.lock b/flake.lock
index 956dbd2..f1b0f1a 100644
--- a/flake.lock
+++ b/flake.lock
@@ -19,9 +19,30 @@
     "root": {
       "inputs": {
         "nixpkgs": "nixpkgs",
+        "rust-overlay": "rust-overlay",
         "systems": "systems"
       }
     },
+    "rust-overlay": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1746758179,
+        "narHash": "sha256-JECUw1YBEsTsVauvupRzE5ykZaJoyhHCpoY87ZZJGas=",
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "rev": "4fd00513eac6b6140c5dced3e1b8133e2369a0f8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "oxalica",
+        "repo": "rust-overlay",
+        "type": "github"
+      }
+    },
     "systems": {
       "locked": {
         "lastModified": 1681028828,
diff --git a/flake.nix b/flake.nix
index 870fdca..1193ad9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,6 +4,10 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     systems.url = "github:nix-systems/default";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = inputs: let
@@ -32,13 +36,18 @@
             (pkgsFor.${system})
             cargo
             rustc
-            rustfmt
             bacon
             ;
           inherit
             (pkgsFor.${system}.rustPackages)
             clippy
             ;
+
+          inherit
+            ((pkgsFor.${system}.extend
+                inputs.rust-overlay.overlays.default).rust-bin.nightly.latest)
+            rustfmt
+            ;
         };
       };
     });