diff --git a/modules/editor/parinfer/config.el b/modules/editor/parinfer/config.el
index f1c26c2f1..a11155393 100644
--- a/modules/editor/parinfer/config.el
+++ b/modules/editor/parinfer/config.el
@@ -7,6 +7,7 @@
           scheme-mode
           lisp-mode
           racket-mode
+          fennel-mode
           hy-mode) . parinfer-rust-mode)
   :init
   (setq parinfer-rust-library