diff --git a/flake.lock b/flake.lock
index e2c33bb..fe01506 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,11 +23,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1778716662,
-        "narHash": "sha256-m1Yf0wZ8j1OHjTc2UwHwyQRSnNeSgLJOd7q5Y45hzi4=",
+        "lastModified": 1782949081,
+        "narHash": "sha256-vp6Y/Grm98ESt6ceOkWiHWyZRDV3J1RID4w+6NWK9yA=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "f7c1a2d347e4c52d5fb8d10cb4d94b5884e546fb",
+        "rev": "17c9d6cdfc60c64f4ee8d306f9bc0b4ccb51481e",
         "type": "github"
       },
       "original": {
@@ -38,11 +38,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1779560665,
-        "narHash": "sha256-tpyBcxPpcQb8ukyNF7DoCwfSY3VPsxHoYwj00Cayv5o=",
+        "lastModified": 1782723713,
+        "narHash": "sha256-oPXCU/SSUokcGaJREHibG1CBX3+s/W7orDWQOZDsEeQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "64c08a7ca051951c8eae34e3e3cb1e202fe36786",
+        "rev": "b5aa0fbd538984f6e3d201be0005b4463d8b09f8",
         "type": "github"
       },
       "original": {
@@ -57,8 +57,7 @@
         "flake-compat": "flake-compat",
         "flake-parts": "flake-parts",
         "nixpkgs": "nixpkgs",
-        "rust-overlay": "rust-overlay",
-        "systems": "systems"
+        "rust-overlay": "rust-overlay"
       }
     },
     "rust-overlay": {
@@ -68,11 +67,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1780284119,
-        "narHash": "sha256-y2wR4Mk6D/N1ID4FZa2oUMStCUxyIoRzmgOOpLzoWmo=",
+        "lastModified": 1782962170,
+        "narHash": "sha256-HsaK9yDDypMB2TPxAYz0mPKtmYhgNwFQa72b3Ko6kRE=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "51390d0bfca0a68a8c337d215a4bbeddc2ca616e",
+        "rev": "e3fa5cf86b93914b8f312b2a1ca14fbb139c655c",
         "type": "github"
       },
       "original": {
@@ -80,21 +79,6 @@
         "repo": "rust-overlay",
         "type": "github"
       }
-    },
-    "systems": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 72c60e3..fcb1b03 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,8 +2,7 @@
   description = "Rust implementation of the Zstandard Seekable Format";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
-    systems.url = "github:nix-systems/default";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
     flake-parts = {
       url = "github:hercules-ci/flake-parts";
       inputs.nixpkgs-lib.follows = "nixpkgs";
@@ -19,14 +18,14 @@
   };
 
   outputs =
-    inputs@{
-      self,
-      flake-parts,
-      systems,
-      ...
-    }:
+    inputs@{ flake-parts, ... }:
     flake-parts.lib.mkFlake { inherit inputs; } {
-      systems = import systems;
+      systems = [
+        "aarch64-darwin"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "x86_64-linux"
+      ];
       perSystem =
         {
           config,