diff --git a/README.md b/README.md
index d8e54ac..165d57d 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ or from git:
 git clone https://github.com/johni0702/mumble-web
 cd mumble-web
 npm install
+npm run postinstall
 npm run build
 ```