diff --git a/flake.lock b/flake.lock
index d8f75ef7..d3e66bb3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -9,7 +9,9 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "rust-overlay": "rust-overlay"
+        "rust-overlay": [
+          "rust-overlay"
+        ]
       },
       "locked": {
         "lastModified": 1655189312,
@@ -94,6 +96,24 @@
         "type": "github"
       }
     },
+    "flake-utils_3": {
+      "inputs": {
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1681202837,
+        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1677383253,
@@ -125,32 +145,42 @@
         "type": "github"
       }
     },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1681358109,
+        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "cargo2nix": "cargo2nix",
         "devshell": "devshell",
         "flake-utils": "flake-utils_2",
         "nixpkgs": "nixpkgs_2",
-        "unstable": "unstable"
+        "rust-overlay": "rust-overlay"
       }
     },
     "rust-overlay": {
       "inputs": {
-        "flake-utils": [
-          "cargo2nix",
-          "flake-utils"
-        ],
-        "nixpkgs": [
-          "cargo2nix",
-          "nixpkgs"
-        ]
+        "flake-utils": "flake-utils_3",
+        "nixpkgs": "nixpkgs_3"
       },
       "locked": {
-        "lastModified": 1653878966,
-        "narHash": "sha256-T51Gck/vrJZi1m+uTbhEFTRgZmE59sydVONadADv358=",
+        "lastModified": 1682734733,
+        "narHash": "sha256-oAoNMgWQveSF1Vv16OJ2GVU+BGGdzazTHpPu/VKy/BQ=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "8526d618af012a923ca116be9603e818b502a8db",
+        "rev": "0bb45c519ebd64f6b4223e1bb6b4e08df80834ca",
         "type": "github"
       },
       "original": {
@@ -174,18 +204,18 @@
         "type": "github"
       }
     },
-    "unstable": {
+    "systems_2": {
       "locked": {
-        "lastModified": 1682773483,
-        "narHash": "sha256-FN7Zf+gQpYQUzt9LeJv6yGnvbqaBb97RjFtNnfu9OB4=",
-        "owner": "nixos",
-        "repo": "nixpkgs",
-        "rev": "d7fa40f31e8c8fa46f5d06b0cd0cb02f0d4c3fa0",
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
-        "repo": "nixpkgs",
+        "owner": "nix-systems",
+        "repo": "default",
         "type": "github"
       }
     }
diff --git a/flake.nix b/flake.nix
index 6ff78379..52cd1df2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,20 +10,21 @@
       url = "github:cargo2nix/cargo2nix/release-0.11.0";
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.flake-utils.follows = "flake-utils";
+      inputs.rust-overlay.follows = "rust-overlay";
     };
+    rust-overlay.url = "github:oxalica/rust-overlay";
     flake-utils.url = "github:numtide/flake-utils";
     nixpkgs.url = "github:nixos/nixpkgs";
     devshell.url = "github:numtide/devshell";
-    unstable.url = "github:nixos/nixpkgs";
   };
 
   outputs = {
     self,
     cargo2nix,
+    rust-overlay,
     nixpkgs,
     flake-utils,
     devshell,
-    unstable,
   }:
     flake-utils.lib.eachDefaultSystem (
       system: let
@@ -32,7 +33,7 @@
           overlays = [cargo2nix.overlays.default devshell.overlays.default];
         };
 
-        deno = unstable.legacyPackages.${system}.deno;
+        deno = nixpkgs.legacyPackages.${system}.deno;
 
         rustPkgs = pkgs.rustBuilder.makePackageSet {
           rustVersion = "1.69.0";