diff --git a/flake.lock b/flake.lock
index 48993f77..5e4c3af4 100644
--- a/flake.lock
+++ b/flake.lock
@@ -18,11 +18,11 @@
     },
     "flake-utils": {
       "locked": {
-        "lastModified": 1623875721,
-        "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=",
+        "lastModified": 1644229661,
+        "narHash": "sha256-1YdnJAsNy69bpcjuoKdOYQX0YxZBiCYZo4Twxerqv7k=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772",
+        "rev": "3cecb5b042f7f209c56ffd8371b2711a290ec797",
         "type": "github"
       },
       "original": {
@@ -33,11 +33,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1625876282,
-        "narHash": "sha256-z/Gv+11Uzdv3HcQCY+xGi1+iuc3rmCaPzxxDSMnuRAI=",
+        "lastModified": 1635350005,
+        "narHash": "sha256-tAMJnUwfaDEB2aa31jGcu7R7bzGELM9noc91L2PbVjg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "068984c00e0d4e54b6684d98f6ac47c92dcb642e",
+        "rev": "1c1f5649bb9c1b0d98637c8c365228f57126f361",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 0c19ef4b..e2ad09e6 100644
--- a/flake.nix
+++ b/flake.nix
@@ -30,22 +30,24 @@
       };
 
     } //
-    flake-utils.lib.eachDefaultSystem (system:
-      let
-        pkgs = import nixpkgs { inherit system; };
-      in
-      {
-        checks.check-format = pkgs.runCommand "check-format"
-          {
-            buildInputs = with pkgs; [ nixpkgs-fmt ];
-          } ''
-          nixpkgs-fmt --check ${./.}
-          mkdir $out # success
-        '';
+    flake-utils.lib.eachSystem
+      (with flake-utils.lib.system; [ "x86_64-linux" "aarch64-linux" ])
+      (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+        in
+        {
+          checks.check-format = pkgs.runCommand "check-format"
+            {
+              buildInputs = with pkgs; [ nixpkgs-fmt ];
+            } ''
+            nixpkgs-fmt --check ${./.}
+            mkdir $out # success
+          '';
 
-        devShell = pkgs.mkShell {
-          nativeBuildInputs = with pkgs; [ nixpkgs-fmt ];
-        };
-      }
-    );
+          devShell = pkgs.mkShell {
+            nativeBuildInputs = with pkgs; [ nixpkgs-fmt ];
+          };
+        }
+      );
 }