diff --git a/lib/update.js b/lib/update.js
index d565bee..ad3ecf7 100644
--- a/lib/update.js
+++ b/lib/update.js
@@ -27,6 +27,11 @@ let ZZZUpdate = null;
  */
 if (Update) {
   ZZZUpdate = class ZZZUpdate extends Update {
+    exec(cmd, plugin, opts = {}) {
+      if (plugin) opts.cwd = `plugins/${plugin}`;
+      return Bot.exec(cmd, opts);
+    }
+
     async handleLog(remote = false) {
       let cmdStr = 'git log -100 --pretty="%h||%cd||%s" --date=format:"%F %T"';
       if (remote) {