diff --git a/emacs-lisp/format_all.org b/emacs-lisp/format_all.org
index 8af939f..56414b6 100644
--- a/emacs-lisp/format_all.org
+++ b/emacs-lisp/format_all.org
@@ -10,6 +10,8 @@
     :config
     (push '(alejandra . ("alejandra"))
           apheleia-formatters)
+    (push '(fourmolu . ("fourmolu" "--stdin-input-file" filepath))
+          apheleia-formatters)
     (push '(nix-mode . alejandra)
           apheleia-mode-alist)
     (apheleia-global-mode +1))