diff --git a/scripts/upgrade b/scripts/upgrade
index d217de6..4038fa7 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -40,6 +40,14 @@ sudo systemctl stop mastodon-*.service
 # Change owner of live folder
 sudo chown -R $app: $final_path/live
 
+# upgrade Node.js v4 to v6 
+node_version=$(nodejs --version)
+if [[ $node_version =~ ^v4.*$  ]]; then
+	pushd /opt
+	curl -sL https://deb.nodesource.com/setup_6.x | sudo bash -
+	sudo apt-get -y install nodejs
+fi
+
 # Download Mastodon
 sudo su - $app <<PULLCOMMANDS
 pushd ~/live