diff --git a/default.nix b/default.nix
index b956241..5d8eaa3 100644
--- a/default.nix
+++ b/default.nix
@@ -26,7 +26,7 @@
         sha256 = {
           "x86_64-linux" = "sha256-41Brz7Oxkk9T+tD6uztq8ZxbpC/gFFUJsy20xeGZtM8=";
           "aarch64-darwin" = "sha256-8gFgTV1qYrC3iw5/AyeEOMAYtcEK7wTXie+Z9RDrqUI=";
-        }.${pkgs.system};
+        }.${pkgs.stdenv.hostPlatform.system};
       };
       hash = builtins.substring 11 32 "${./mix.lock}";
     in
diff --git a/flake.nix b/flake.nix
index a236fc1..da7289e 100644
--- a/flake.nix
+++ b/flake.nix
@@ -57,14 +57,14 @@
         '';
       in lib.mkIf cfg.enable {
         home.sessionVariables.FRAJTANO_DIR = cfg.dir;
-        home.packages = [self.packages.${pkgs.system}.default];
+        home.packages = [self.packages.${pkgs.stdenv.hostPlatform.system}.default];
 
         systemd.user.services.frajtano = {
           Unit.Description = "frajtano";
           Unit.After = ["default.target"];
           Service.Type = "notify";
           Service.Environment = ["'FRAJTANO_DIR=${cfg.dir}'" "'FRAJTANO_CONFIG=${configFile}'"];
-          Service.ExecSearchPath = ["${self.packages.${pkgs.system}.default}/bin"];
+          Service.ExecSearchPath = ["${self.packages.${pkgs.stdenv.hostPlatform.system}.default}/bin"];
           Service.ExecStart = "frajtano start";
           Install.WantedBy = ["default.target"];
         };
@@ -76,7 +76,7 @@
               FRAJTANO_DIR = "${cfg.dir}";
               FRAJTANO_CONFIG = "${configFile}";
             };
-            ProgramArguments = ["${self.packages.${pkgs.system}.default}/bin/frajtano" "start"];
+            ProgramArguments = ["${self.packages.${pkgs.stdenv.hostPlatform.system}.default}/bin/frajtano" "start"];
             RunAtLoad = true;
             KeepAlive = true;
           };
diff --git a/shell.nix b/shell.nix
index 58f1cbd..c9c8b1b 100644
--- a/shell.nix
+++ b/shell.nix
@@ -11,8 +11,8 @@ mkShell {
   inputsFrom = [ ownPkgs.default ];
   packages =
     [elixir elixir-ls]
-    ++ lib.lists.optional (pkgs.system == "x86_64-linux") inotify-tools
-    ++ lib.lists.optionals (pkgs.system == "aarch64-darwin") (with pkgs.darwin.apple_sdk.frameworks; [
+    ++ lib.lists.optional (pkgs.stdenv.hostPlatform.system == "x86_64-linux") inotify-tools
+    ++ lib.lists.optionals (pkgs.stdenv.hostPlatform.system == "aarch64-darwin") (with pkgs.darwin.apple_sdk.frameworks; [
       CoreFoundation
       CoreServices
     ]);