diff --git a/README.md b/README.md
index 685fecc8..107c8e31 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,7 @@ Master and all slaves:
     curl -o factorio.tar.gz -L https://www.factorio.com/get-download/latest/headless/linux64
     tar -xf factorio.tar.gz
     npm install
+    node ./lib/npmPostinstall.js
 
 downloads and installs nodejs, pm2, git and clusterio. To specify a version, change "latest" in the link to a version number like 0.14.21.