diff --git a/flake.lock b/flake.lock
index 9a3064c5..1fb9ee95 100644
--- a/flake.lock
+++ b/flake.lock
@@ -37,26 +37,7 @@
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs",
-        "rust-overlay": "rust-overlay"
-      }
-    },
-    "rust-overlay": {
-      "inputs": {
-        "nixpkgs": ["nixpkgs"]
-      },
-      "locked": {
-        "lastModified": 1718936281,
-        "narHash": "sha256-jslEDCVFoRcNilJT0xYGSxqMjOe+USnLknpHIAZJ02A=",
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "rev": "c9a793a5278f711a59fe77b9bf54b215667022c6",
-        "type": "github"
-      },
-      "original": {
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "type": "github"
+        "nixpkgs": "nixpkgs"
       }
     },
     "systems": {
diff --git a/flake.nix b/flake.nix
index c85cabf1..1ada2a4c 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,18 +4,13 @@
   inputs = {
     flake-utils.url = "github:numtide/flake-utils";
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
-    rust-overlay = {
-      url = "github:oxalica/rust-overlay";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
   };
 
-  outputs = { self, nixpkgs, flake-utils, rust-overlay } @ imports: (
+  outputs = { self, nixpkgs, flake-utils } @ imports: (
     flake-utils.lib.eachDefaultSystem (
       system: (
         let
           overlays = [
-            (import rust-overlay)
           ];
           pkgs = import nixpkgs { inherit overlays system; };
           baseDependencies = with pkgs; [
@@ -34,7 +29,9 @@
             };
             doc-tests = pkgs.mkShell {
               buildInputs = with pkgs; [
-                rust-bin.stable.latest.default
+                cargo
+                rustc
+                rustfmt
               ]
               ++ baseDependencies;
             };