diff --git a/scripts/upgrade b/scripts/upgrade
index 326ec40..7683d8d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -137,11 +137,13 @@ chown -R "$app":"$app" "$final_path"
 
 pushd $final_path
     ynh_use_nodejs
-    sudo -u $app env PATH=$PATH:$nodejs_path yarn install
-    sudo -u $app env PATH=$PATH:$nodejs_path npm run build
+	sudo -u $app env PATH=$PATH yarn cache clean
+	sudo -u $app env PATH=$PATH yarn --frozen-lockfile --non-interactive
+	sudo -u $app env PATH=$PATH yarn build
+	sudo -u $app env PATH=$PATH ynh_secure_remove $final_path/node_modules
+	sudo -u $app env PATH=$PATH yarn --production --frozen-lockfile --non-interactive
 popd
 
-
 #=================================================
 # MODIFY A CONFIG FILE
 #=================================================