diff --git a/Makefile b/Makefile
index cc2d52c..0b5fffc 100644
--- a/Makefile
+++ b/Makefile
@@ -48,7 +48,7 @@ js/node_modules/xterm/dist/xterm.css:
 	cd js && \
 	npm install
 
-js/dist/gotty-bundle.js:
+js/dist/gotty-bundle.js: js/src/*
 	cd js && \
 	webpack