diff --git a/scripts/upgrade b/scripts/upgrade
index 42cc882..f21e597 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -87,17 +87,19 @@ then
 	ynh_secure_remove --file="$final_path"
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
-
-	pushd $final_path
-		ynh_use_nodejs
-		ynh_exec_warn_less $ynh_npm install
-	popd
 fi
 
 chmod 750 "$final_path"
 chmod -R o-rwx "$final_path"
 chown -R $app:www-data "$final_path"
 
+if [ "$upgrade_type" == "UPGRADE_APP" ]
+then
+	pushd $final_path
+		ynh_use_nodejs
+		ynh_exec_warn_less $ynh_npm install
+	popd
+fi
 #=================================================
 # NGINX CONFIGURATION
 #=================================================