diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index dc6c3b8..393c188 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -23,7 +23,7 @@
   services.vmwareGuest.enable = true;
 
   # The NixOS release to be compatible with for stateful data such as databases.
-  system.stateVersion = "18.03";
+  system.nixos.stateVersion = "18.03";
   programs.fish.enable = true;
   programs.tmux.enable = true;