diff --git a/lib/encode.js b/lib/encode.js
index <HASH>..<HASH> 100644
--- a/lib/encode.js
+++ b/lib/encode.js
@@ -13,6 +13,8 @@ exports.decode = function (value, enc) {
     return enc.decode(value)
   } else if (enc === 'json') {
     return JSON.parse(value.toString())
+  } else if (enc === 'utf-8' || enc === 'utf8') {
+    return value.toString()
   }
   return value
 }
support utf-8 as encoding