diff --git a/petalius.nix b/petalius.nix
index bc7562c..19b0df1 100644
--- a/petalius.nix
+++ b/petalius.nix
@@ -86,4 +86,6 @@
 
   #services.avahi.nssmdns = true;
 
+  system.nixos.stateVersion = "18.03";
+
 }