diff --git a/Makefile b/Makefile
index 9da4b87977..b597fd4faa 100644
--- a/Makefile
+++ b/Makefile
@@ -110,3 +110,4 @@ bootstrap:
 	npm install
 	git submodule update --init
 	cd vendor/regenerator; npm install
+	cd vendor/compat-table; npm install object-assign