diff --git a/flake.lock b/flake.lock
index 330a6f0..fff60e0 100644
--- a/flake.lock
+++ b/flake.lock
@@ -69,21 +69,6 @@
       }
     },
     "flake-utils_2": {
-      "locked": {
-        "lastModified": 1659877975,
-        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
-    "flake-utils_3": {
       "locked": {
         "lastModified": 1653893745,
         "narHash": "sha256-0jntwV3Z8//YwuOjzhV2sgJJPt+HY6KhU7VZUL0fKZQ=",
@@ -130,22 +115,6 @@
       }
     },
     "nixpkgs_3": {
-      "locked": {
-        "lastModified": 1665296151,
-        "narHash": "sha256-uOB0oxqxN9K7XGF1hcnY+PQnlQJ+3bP2vCn/+Ru/bbc=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "14ccaaedd95a488dd7ae142757884d8e125b3363",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs_4": {
       "locked": {
         "lastModified": 1654275867,
         "narHash": "sha256-pt14ZE4jVPGvfB2NynGsl34pgXfOqum5YJNpDK4+b9E=",
@@ -161,26 +130,11 @@
         "type": "github"
       }
     },
-    "oxalica": {
-      "inputs": {
-        "flake-utils": "flake-utils_2",
-        "nixpkgs": "nixpkgs_3"
-      },
-      "locked": {
-        "narHash": "sha256-8OfySbY1hhBzj0Iz90k4se6oFCGS3+ke31vkd0d4k/o=",
-        "type": "tarball",
-        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
-      }
-    },
     "pkgs-cargo2nix": {
       "inputs": {
         "flake-compat": "flake-compat_2",
-        "flake-utils": "flake-utils_3",
-        "nixpkgs": "nixpkgs_4",
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_3",
         "rust-overlay": "rust-overlay_2"
       },
       "locked": {
@@ -201,7 +155,6 @@
       "inputs": {
         "crane": "crane",
         "nixpkgs": "nixpkgs_2",
-        "oxalica": "oxalica",
         "pkgs-cargo2nix": "pkgs-cargo2nix",
         "unstable": "unstable"
       }
diff --git a/flake.nix b/flake.nix
index 5288f45..eeb483f 100644
--- a/flake.nix
+++ b/flake.nix
@@ -4,12 +4,11 @@
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-22.11";
     unstable.url = "nixpkgs/nixos-unstable";
-    oxalica.url = "https://github.com/oxalica/rust-overlay/archive/master.tar.gz";
     pkgs-cargo2nix.url = "github:cargo2nix/cargo2nix";
     crane.url = "github:ipetkov/crane";
   };
 
-  outputs = { self, nixpkgs, unstable, oxalica, pkgs-cargo2nix, crane, ... }:
+  outputs = { self, nixpkgs, unstable, pkgs-cargo2nix, crane, ... }:
     let 
       version = builtins.string 0 8 self.lastModifiedDate;
       supportedSystems = [ "x86_64-linux" ];
@@ -18,12 +17,8 @@
     {
       devShell."x86_64-linux" =
         let
-          rust_overlay = import oxalica;
-          pkgs = import nixpkgs { system = "x86_64-linux"; overlays = [ rust_overlay ]; };
-          pkgs-unstable = import unstable { system = "x86_64-linux"; overlays = [ rust_overlay ]; };
-          rust = pkgs.rust-bin.stable."1.65.0".default.override {
-            extensions = [ "rust-src" ];
-          };
+          pkgs = import nixpkgs { system = "x86_64-linux"; };
+          pkgs-unstable = import unstable { system = "x86_64-linux"; };
           cargo2nix = pkgs-cargo2nix.packages."x86_64-linux";
         in
         pkgs.mkShell {
@@ -44,7 +39,7 @@
             pkgs.pipewire
             pkgs.pkg-config
             pkgs.sqlite
-            rust
+            pkgs.rustup
           ];
           LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib";
         };
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..1cae25b
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "1.68.2"
+components = ["rust-src"]