diff --git a/aliases/lock.sh b/aliases/lock.sh
new file mode 100755
index 0000000..1401105
--- /dev/null
+++ b/aliases/lock.sh
@@ -0,0 +1 @@
+loginctl lock-session
diff --git a/nix/hosts/kumatani/configuration.nix b/nix/hosts/kumatani/configuration.nix
index a734409..6bab374 100644
--- a/nix/hosts/kumatani/configuration.nix
+++ b/nix/hosts/kumatani/configuration.nix
@@ -31,6 +31,12 @@
     open = true;
     videoAcceleration = true;
   };
+  swapDevices = [
+    {
+      device = "/swapfile";
+      size = 4 * 1024;
+    }
+  ];
 
   time.timeZone = "America/Vancouver";
 
diff --git a/nix/hosts/usahara/configuration.nix b/nix/hosts/usahara/configuration.nix
index 50789e7..958a0b6 100644
--- a/nix/hosts/usahara/configuration.nix
+++ b/nix/hosts/usahara/configuration.nix
@@ -28,6 +28,12 @@
   networking.hostName = meta.hostname;
   networking.networkmanager.enable = true;
   hardware.bluetooth.enable = true;
+  swapDevices = [
+    {
+      device = "/swapfile";
+      size = 4 * 1024;
+    }
+  ];
 
   time.timeZone = "America/Vancouver";