diff --git a/install.sh b/install.sh
index 9b739a4..735e239 100755
--- a/install.sh
+++ b/install.sh
@@ -51,7 +51,7 @@ install_node_deps () {
     echo "npm not installed"
     return
   fi
-  npm install -g $@
+ sudo npm install -g $@
 }
 
 install_ts() {