diff --git a/nixos/configuration.nix b/nixos/configuration.nix
index c3a96cdb..118502a6 100644
--- a/nixos/configuration.nix
+++ b/nixos/configuration.nix
@@ -115,6 +115,7 @@ in
     stow
     tmux
     wget
+    wmctrl
     zsh
 
     # Miscellaneous
@@ -197,5 +198,5 @@ in
     shell = pkgs.zsh;
   };
 
-  system.stateVersion = "18.03"; # Did you read the comment?
+  system.stateVersion = "18.03";
 }