diff --git a/README.md b/README.md
index b39e7bb558fc21eca452bfeeefe994e356032c51..d330815fcb7914f5d001b471bcb6dad72e391d48 100644
--- a/README.md
+++ b/README.md
@@ -131,7 +131,7 @@ authRequest.login(callback);
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/teambition.png" width="20">  | [AuthTeambitionRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthTeambitionRequest.java) | <a href="https://docs.teambition.com/" target="_blank">参考文档</a> |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/renren.png" width="20">  | [AuthRenrenRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthRenrenRequest.java) | <a href="http://open.renren.com/wiki/OAuth2.0" target="_blank">参考文档</a> |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/pinterest.png" width="20">  | [AuthPinterestRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthPinterestRequest.java) | <a href="https://developers.pinterest.com/docs/api/overview/?" target="_blank">参考文档</a> |
-|  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/stackoverflow.png" width="20">  | [AuthStackOverflowRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthStackOverflowRequest.java) | <a href="https://api.stackexchange.com/docs" target="_blank">参考文档</a> |
+|  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/stackoverflow.png" width="20">  | [AuthStackOverflowRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthStackOverflowRequest.java) | <a href="https://api.stackexchange.com/docs/authentication" target="_blank">参考文档</a> |
 |  <img src="https://gitee.com/yadong.zhang/static/raw/master/JustAuth/csdn.png" width="20">  |  [AuthCsdnRequest](https://gitee.com/yadong.zhang/JustAuth/blob/master/src/main/java/me/zhyd/oauth/request/AuthCsdnRequest.java)  |  无 |
 
 _请知悉：经咨询CSDN官方客服得知，CSDN的授权开放平台已经下线。如果以前申请过的应用，可以继续使用，但是不再支持申请新的应用。so, 本项目中的CSDN登录只能针对少部分用户使用了_
diff --git a/src/main/java/me/zhyd/oauth/request/AuthPinterestRequest.java b/src/main/java/me/zhyd/oauth/request/AuthPinterestRequest.java
index ce001222174bd88c9129a1a7b58ac56a7550679c..d9725e23d228a5a399c5bc856dd1a1b64bb74add 100644
--- a/src/main/java/me/zhyd/oauth/request/AuthPinterestRequest.java
+++ b/src/main/java/me/zhyd/oauth/request/AuthPinterestRequest.java
@@ -71,4 +71,15 @@ public class AuthPinterestRequest extends AuthDefaultRequest {
         return jsonObject.getJSONObject("60x60").getString("url");
     }
 
+    @Override
+    public String authorize() {
+        return UrlBuilder.fromBaseUrl(source.authorize())
+            .queryParam("response_type", "code")
+            .queryParam("client_id", config.getClientId())
+            .queryParam("redirect_uri", config.getRedirectUri())
+            .queryParam("state", getRealState(config.getState()))
+            .queryParam("scope", "read_public")
+            .build();
+    }
+
 }
diff --git a/src/main/java/me/zhyd/oauth/request/AuthStackOverflowRequest.java b/src/main/java/me/zhyd/oauth/request/AuthStackOverflowRequest.java
index db9b3d75e58a85d24353155c0c59659efa272929..d30392ae15d2ff4b5d51dd4671fd576a9ff9fd8a 100644
--- a/src/main/java/me/zhyd/oauth/request/AuthStackOverflowRequest.java
+++ b/src/main/java/me/zhyd/oauth/request/AuthStackOverflowRequest.java
@@ -47,7 +47,8 @@ public class AuthStackOverflowRequest extends AuthDefaultRequest {
 
     @Override
     protected AuthUser getUserInfo(AuthToken authToken) {
-        String userInfoUrl = UrlBuilder.fromBaseUrl(userInfoUrl(authToken))
+        String userInfoUrl = UrlBuilder.fromBaseUrl(this.source.userInfo())
+            .queryParam("access_token", authToken.getAccessToken())
             .queryParam("site", "stackoverflow")
             .queryParam("key", this.config.getStackOverflowKey())
             .build();
@@ -65,4 +66,15 @@ public class AuthStackOverflowRequest extends AuthDefaultRequest {
             .source(STACK_OVERFLOW)
             .build();
     }
+
+    @Override
+    public String authorize() {
+        return UrlBuilder.fromBaseUrl(source.authorize())
+            .queryParam("response_type", "code")
+            .queryParam("client_id", config.getClientId())
+            .queryParam("redirect_uri", config.getRedirectUri())
+            .queryParam("state", getRealState(config.getState()))
+            .queryParam("scope", "read_inbox")
+            .build();
+    }
 }