diff --git a/README.md b/README.md
index 23b555d..8cb4ea8 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ Here's an example for adding the middleware to a Rails app in `config/initialize
 
 ```ruby
 Rails.application.config.middleware.use OmniAuth::Builder do
-  provider :wechat, ENV["WECHAT_APP_ID"], ENV["WECHAT_APP_SECRET"]
+  provider :wechat, ENV["WECHAT_APP_ID"], ENV["WECHAT_APP_SECRET"], scope: 'snsapi_userinfo'
 end
 ```
 
@@ -78,6 +78,7 @@ Here's an example of an authentication hash available in the callback by accessi
     },
     :extra => {
         :raw_info => {
+          unionid:    "unionid", #if exist
           openid:     "openid"
           nickname:   "Nickname",
           sex:        1,
diff --git a/lib/omniauth/strategies/wechat.rb b/lib/omniauth/strategies/wechat.rb
index 2302d24..bc7334b 100644
--- a/lib/omniauth/strategies/wechat.rb
+++ b/lib/omniauth/strategies/wechat.rb
@@ -7,7 +7,7 @@ class Wechat < OmniAuth::Strategies::OAuth2
 
       option :client_options, {
         site:          "https://api.weixin.qq.com",
-        authorize_url: "https://open.weixin.qq.com/connect/qrconnect?#wechat_redirect",
+        authorize_url: "https://open.weixin.qq.com/connect/oauth2/authorize?#wechat_redirect",
         token_url:     "/sns/oauth2/access_token",
         token_method:  :get
       }
diff --git a/spec/omniauth/strategies/wechat_spec.rb b/spec/omniauth/strategies/wechat_spec.rb
index 7f5d3fa..96b97b1 100644
--- a/spec/omniauth/strategies/wechat_spec.rb
+++ b/spec/omniauth/strategies/wechat_spec.rb
@@ -27,7 +27,7 @@
     end
 
     specify 'has authorize_url' do
-      expect(subject.client.options[:authorize_url]).to eq('https://open.weixin.qq.com/connect/qrconnect?#wechat_redirect')
+      expect(subject.client.options[:authorize_url]).to eq('https://open.weixin.qq.com/connect/oauth2/authorize?#wechat_redirect')
     end
 
     specify 'has token_url' do
@@ -99,8 +99,8 @@
 
     context "when scope is snsapi_base" do
       let(:access_token) { OAuth2::AccessToken.from_hash(client, {
-        "openid"=>"openid", 
-        "scope"=>"snsapi_base", 
+        "openid"=>"openid",
+        "scope"=>"snsapi_base",
         "access_token"=>"access_token"
       })}
 
@@ -112,8 +112,8 @@
 
     context "when scope is snsapi_login" do
       let(:access_token) { OAuth2::AccessToken.from_hash(client, {
-        "openid"=>"openid", 
-        "scope"=>"snsapi_login", 
+        "openid"=>"openid",
+        "scope"=>"snsapi_login",
         "access_token"=>"access_token"
       })}
 
@@ -124,18 +124,18 @@
           expect(opts[:params]).to eq("openid"=> "openid", "lang"=>"zh_CN", "access_token"=> "access_token")
           expect(opts[:parse]).to eq(:json)
         end.and_return(double("response", parsed: 
-          {
-            "openid" => "OPENID",
-            "nickname" => "NICKNAME",
-            "sex" => "1",
-            "province" => "PROVINCE",
-            "city" => "CITY",
-            "country" => "COUNTRY",
-            "headimgurl" => "header_image_url",
-            "privilege" => ["PRIVILEGE1", "PRIVILEGE2"],
-            "unionid" => "UNIONID"
-          }
-        ))
+                              {
+          "openid" => "OPENID",
+          "nickname" => "NICKNAME",
+          "sex" => "1",
+          "province" => "PROVINCE",
+          "city" => "CITY",
+          "country" => "COUNTRY",
+          "headimgurl" => "header_image_url",
+          "privilege" => ["PRIVILEGE1", "PRIVILEGE2"],
+          "unionid" => "UNIONID"
+        }
+                             ))
 
         expect(subject.raw_info).to eq(
           {