diff --git a/modules/languages/siren-ruby.el b/modules/languages/siren-ruby.el
index ff73559..1f80cf2 100644
--- a/modules/languages/siren-ruby.el
+++ b/modules/languages/siren-ruby.el
@@ -157,7 +157,9 @@
    (expand-file-name "bin/rubocop-daemon-wrapper" siren-dir))
 
   :config
-  (add-to-list 'safe-local-variable-values '(rubocopfmt-include-unsafe-cops)))
+  (add-to-list 'safe-local-variable-values
+               '(rubocopfmt-include-unsafe-cops
+                 rubocopfmt-on-save-use-lsp-format-buffer)))
 
 (use-package ruby-compilation
   :defer t)