diff --git a/elixir-phoenix/flake.nix b/elixir-phoenix/flake.nix
index 1132f72..84aa36a 100644
--- a/elixir-phoenix/flake.nix
+++ b/elixir-phoenix/flake.nix
@@ -4,20 +4,16 @@
     inputs.nixpkgs.follows = "nixpkgs";
     inputs.flake-utils.follows = "flake-utils";
   };
+  inputs.systems.url = "github:nix-systems/default";
 
   outputs = {
     self,
     nixpkgs,
+    systems,
     flake-utils,
     pre-commit-hooks,
   }:
-    flake-utils.lib.eachSystem [
-      # TODO: Configure your supported system here.
-      "x86_64-linux"
-      "aarch64-linux"
-      "i686-linux"
-      "x86_64-darwin"
-    ]
+    flake-utils.lib.eachSystem (import systems)
     (
       system: let
         pkgs = import nixpkgs {
diff --git a/elixir/flake.nix b/elixir/flake.nix
index 5281323..2ea3334 100644
--- a/elixir/flake.nix
+++ b/elixir/flake.nix
@@ -1,10 +1,13 @@
 {
+  inputs.systems.url = "github:nix-systems/default";
+
   outputs = {
     self,
     nixpkgs,
+    systems,
     flake-utils,
   }:
-    flake-utils.lib.eachDefaultSystem
+    flake-utils.lib.eacySystem (import systems)
     (
       system: let
         pkgs = import nixpkgs {
diff --git a/minimal/flake.nix b/minimal/flake.nix
index dcdb89d..add4124 100644
--- a/minimal/flake.nix
+++ b/minimal/flake.nix
@@ -1,10 +1,13 @@
 {
+  inputs.systems.url = "github:nix-systems/default";
+
   outputs = {
     self,
     nixpkgs,
     flake-utils,
+    systems,
   }:
-    flake-utils.lib.eachDefaultSystem
+    flake-utils.lib.eachSystem (import systems)
     (system: let
       pkgs = import nixpkgs {
         inherit system;
diff --git a/node-typescript/flake.nix b/node-typescript/flake.nix
index 7f94cc1..aa8f006 100644
--- a/node-typescript/flake.nix
+++ b/node-typescript/flake.nix
@@ -1,13 +1,15 @@
 {
   # Override nixpkgs to use the latest set of node packages
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/master";
+  inputs.systems.url = "github:nix-systems/default";
 
   outputs = {
     self,
     nixpkgs,
     flake-utils,
+    systems,
   }:
-    flake-utils.lib.eachDefaultSystem
+    flake-utils.lib.eachSystem (import systems)
     (system: let
       pkgs = import nixpkgs {
         inherit system;
diff --git a/pre-commit/flake.nix b/pre-commit/flake.nix
index 0a8a15e..8b06ecf 100644
--- a/pre-commit/flake.nix
+++ b/pre-commit/flake.nix
@@ -4,14 +4,16 @@
     inputs.nixpkgs.follows = "nixpkgs";
     inputs.flake-utils.follows = "flake-utils";
   };
+  inputs.systems.url = "github:nix-systems/default";
 
   outputs = {
     self,
     nixpkgs,
     flake-utils,
+    systems,
     pre-commit-hooks,
   }:
-    flake-utils.lib.eachDefaultSystem
+    flake-utils.lib.eachSystem (import systems)
     (system: let
       pkgs = import nixpkgs {inherit system;};
     in rec {