diff --git a/nix/base.nix b/nix/base.nix
index f1aaff3..71bef93 100644
--- a/nix/base.nix
+++ b/nix/base.nix
@@ -5,8 +5,6 @@
     <nix/local.nix>
   ];
 
-  system.nixos.stateVersion = "18.03";
-
   services.xserver = {
     enable = true;
     desktopManager.xterm.enable = false;