diff --git a/package.json b/package.json
index b529c9b..c279e36 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "deep-equal": "^1.0.1",
     "freemarker.js": "^1.2.1",
     "fs-extra": "^0.22.1",
-    "koa": "^0.21.0",
+    "koa": "^2.0.1",
     "koa-body-parser": "^1.1.2",
     "koa-router": "^5.1.2",
     "koa-serve-index": "^1.0.4",