diff --git a/nix/os/devices/steveej-t480s-work/versions.nix b/nix/os/devices/steveej-t480s-work/versions.nix
index 027884a..4db49e8 100644
--- a/nix/os/devices/steveej-t480s-work/versions.nix
+++ b/nix/os/devices/steveej-t480s-work/versions.nix
@@ -1,10 +1,15 @@
 {
   channelsNixosStable = {
-    ref = "nixos-18.09";
-    rev = "97e0d53d669cd07f0750a42fd535524b3cdd46d1";
+    ref = "nixos-19.03";
+    rev = "07e2b59812de95deeedde95fb6ba22d581d12fbc";
   };
   channelsNixosUnstable = {
     ref = "nixos-unstable";
-    rev = "be445a9074f139d63e704fa82610d25456562c3d";
+    rev = "34aa254f9ebf5899636a9927ceefbc9df80230f4";
+  };
+  homeManagerModule = {
+    url = "https://github.com/rycee/home-manager";
+    ref = "master";
+    rev = "465d08d99f5b72b38cecb7ca1865b7255de3ee86";
   };
 }