diff --git a/plugins/lang/ruby.nix b/plugins/lang/ruby.nix
index e7ea449..b3893bd 100644
--- a/plugins/lang/ruby.nix
+++ b/plugins/lang/ruby.nix
@@ -1,6 +1,11 @@
+{ pkgs, ... }:
 {
   plugins.lsp.servers = {
     rubocop.enable = true;
     ruby_lsp.enable = true;
   };
+
+  system.extraPackages = with pkgs; [
+    rubyPackages.rubocop-performance
+  ];
 }