diff --git a/build/webpack.dev.js b/build/webpack.dev.js
index 5ff32f924..1a996814d 100644
--- a/build/webpack.dev.js
+++ b/build/webpack.dev.js
@@ -40,7 +40,13 @@ module.exports = {
       {
         test: /\.(js|ts|tsx)$/,
         exclude: /node_modules/,
-        use: 'babel-loader'
+        use: {
+          loader: 'babel-loader',
+          // enable sub-packages to find babel config
+          options: {
+            rootMode: 'upward'
+          }
+        }
       },
       {
         test: /\.less$/,
diff --git a/package.json b/package.json
index 5fa8072ae..677a8ea97 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "@babel/preset-typescript": "^7.3.3",
     "@types/jest": "^24.0.16",
     "@vant/cli": "^1.0.4",
-    "@vant/doc": "^2.5.1",
+    "@vant/doc": "^2.5.2",
     "@vant/eslint-config": "^1.2.5",
     "@vant/markdown-loader": "^2.2.0",
     "@vant/markdown-vetur": "^1.0.0",
diff --git a/packages/vant-doc/package.json b/packages/vant-doc/package.json
index 5a4bea62e..3fa88e0c4 100644
--- a/packages/vant-doc/package.json
+++ b/packages/vant-doc/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@vant/doc",
-  "version": "2.5.1",
+  "version": "2.5.2",
   "description": "vant document template",
   "main": "./lib/index.js",
   "publishConfig": {
diff --git a/yarn.lock b/yarn.lock
index 25fb22d1f..4afb56108 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1194,10 +1194,10 @@
     shelljs "^0.8.2"
     signale "^1.4.0"
 
-"@vant/doc@^2.5.1":
-  version "2.5.1"
-  resolved "https://registry.yarnpkg.com/@vant/doc/-/doc-2.5.1.tgz#7c17e2dd20533f6359b526c20c75eb27a031cfb7"
-  integrity sha512-Ff5ach0ZR0tCcfGq0pnjsa2OPhg1zZ3zGE5OKMU3uFrld9sRXFqiB1TL4WpqtGmIA7UqmBVS+4MNt0Lo62knMg==
+"@vant/doc@^2.5.2":
+  version "2.5.2"
+  resolved "https://registry.yarnpkg.com/@vant/doc/-/doc-2.5.2.tgz#fbc51239eab5fcbeb31aac67fe285378238c1ba7"
+  integrity sha512-Pz+bNXBv09Sr7T8G2gNejp6XRsDsHqdMMr/O/cq9ylrNfQToPS+cPkerjf296b2b8/aLDGO9nVNuA9Gu84A2Qw==
 
 "@vant/eslint-config@^1.2.5":
   version "1.2.5"