diff --git a/machines/thonkpad/default.nix b/machines/thonkpad/default.nix
index fc89d97..c2920d2 100644
--- a/machines/thonkpad/default.nix
+++ b/machines/thonkpad/default.nix
@@ -33,6 +33,16 @@
     LC_TIME = "en_US.UTF-8";
   };
 
+  # system auto upgrading
+  system.autoUpgrade = {
+    enable = true;
+    persistent = true;
+    flake = "/etc/nixos#${config.networking.thonkpad}";
+    flags = [
+      "-L"
+    ];
+  };
+
   # This value determines the NixOS release from which the default
   # settings for stateful data, like file locations and database versions
   # on your system were taken. It‘s perfectly fine and recommended to leave
diff --git a/machines/thunkpad/default.nix b/machines/thunkpad/default.nix
index e9ec770..9b78a38 100644
--- a/machines/thunkpad/default.nix
+++ b/machines/thunkpad/default.nix
@@ -33,6 +33,16 @@
     LC_TIME = "en_US.UTF-8";
   };
 
+  # system auto upgrading
+  system.autoUpgrade = {
+    enable = true;
+    persistent = true;
+    flake = "/etc/nixos#${config.networking.thunkpad}";
+    flags = [
+      "-L"
+    ];
+  };
+
   # enable the proper fingerprint drivers, ensuring the default fprintd
   # package is disabled.
   services.fprintd.enable = false;