diff --git a/modules/languages/siren-ruby.el b/modules/languages/siren-ruby.el
index 40e9839..f41b7b8 100644
--- a/modules/languages/siren-ruby.el
+++ b/modules/languages/siren-ruby.el
@@ -149,7 +149,7 @@
 
   :custom
   (rubocopfmt-include-unsafe-cops t)
-  (rubocopfmt-on-save-use-lsp-format-buffer nil)
+  (rubocopfmt-on-save-use-lsp-format-buffer t)
   (rubocopfmt-show-errors 'echo)
   (rubocopfmt-use-bundler-when-possible nil)
   (rubocopfmt-rubocop-command