diff --git a/lisp/languages.el b/lisp/languages.el
index f8e1472..cb98737 100644
--- a/lisp/languages.el
+++ b/lisp/languages.el
@@ -38,8 +38,10 @@
 
 (use-package rustic
   :custom
+  (rustic-format-trigger 'on-save) ; Format buffer on save
   (rustic-lsp-client 'eglot)) ; Make eglot the default LSP client
 
+
 ;; Disable flymake for eglot - in favour of flycheck
 (add-hook 'eglot--managed-mode-hook (lambda () (flymake-mode -1)))