diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index dc8eb4e8832..b4b0281fe58 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -75,7 +75,7 @@ with lib;
       mkDefault (if pathExists fn then readFile fn else "master");
 
     # Note: code names must only increase in alphabetical order.
-    system.nixosCodeName = "Dingo";
+    system.nixosCodeName = "Emu";
 
     # Generate /etc/os-release.  See
     # http://0pointer.de/public/systemd-man/os-release.html for the