diff --git a/makefile b/makefile
--- a/makefile
+++ b/makefile
@@ -100,7 +100,7 @@ arduino_upload: /usr/share/arduino/Ardui
 effect_node_setup: create_virtualenv packages binexec install_python_deps
 
 coffee:
-	zsh -c 'coffee -cw light9/web/{.,live,timeline}/*.coffee'
+	zsh -c 'coffee -cw light9/web/{.,live,timeline,paint}/*.coffee'
 
 env-mypy/bin/mypy:
 	mkdir -p env-mypy