diff --git a/Makefile b/Makefile
index e390fc67..bca313fb 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,7 @@
-test:
+test: node_modules
 	./node_modules/.bin/mocha -R spec -t 10000
 
-.PHONY: test
\ No newline at end of file
+node_modules: package.json
+	npm install
+
+.PHONY: test