diff --git a/scripts/upgrade b/scripts/upgrade
index 532ec7f..f9843a4 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -87,7 +87,8 @@ then
 	
 	pushd $final_path
 		ynh_use_nodejs
-		npm update -g tiddlywiki
+		#npm update -g tiddlywiki
+		ynh_exec_as $app env $ynh_node_load_PATH $ynh_npm  update -g tiddlywiki
 	popd
 fi