diff --git a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxAccessToken.java b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxAccessToken.java
index c923e4f6b..ce69a1046 100644
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxAccessToken.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxAccessToken.java
@@ -5,6 +5,7 @@ import me.chanjar.weixin.common.util.json.WxGsonBuilder;
 import java.io.Serializable;
 
 public class WxAccessToken implements Serializable {
+  private static final long serialVersionUID = 8709719312922168909L;
 
   private String accessToken;
   
diff --git a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxCardApiSignature.java b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxCardApiSignature.java
index 5d4d46a9c..e1d1b058f 100644
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxCardApiSignature.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxCardApiSignature.java
@@ -10,6 +10,8 @@ import java.io.Serializable;
  */
 public class WxCardApiSignature implements Serializable {
 
+    private static final long serialVersionUID = 158176707226975979L;
+
     private String appId;
 
     private String cardId;
diff --git a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxJsapiSignature.java b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxJsapiSignature.java
index 886fd3600..74f0b1b1a 100644
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxJsapiSignature.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxJsapiSignature.java
@@ -6,6 +6,8 @@ import java.io.Serializable;
  * jspai signature
  */
 public class WxJsapiSignature implements Serializable {
+  private static final long serialVersionUID = -1116808193154384804L;
+
   private String appid;
   
   private String noncestr;
diff --git a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxMenu.java b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxMenu.java
index ccc7bc490..d33f47e3b 100644
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxMenu.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/WxMenu.java
@@ -16,6 +16,8 @@ import java.util.List;
  */
 public class WxMenu implements Serializable {
 
+  private static final long serialVersionUID = -7083914585539687746L;
+
   private List<WxMenuButton> buttons = new ArrayList<WxMenuButton>();
 
   private WxMenuRule matchRule;
diff --git a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxError.java b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxError.java
index 740841b9a..737f506f6 100644
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxError.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxError.java
@@ -12,6 +12,8 @@ import java.io.Serializable;
  */
 public class WxError implements Serializable {
 
+  private static final long serialVersionUID = 7869786563361406291L;
+
   private int errorCode;
   
   private String errorMsg;
diff --git a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxMediaUploadResult.java b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxMediaUploadResult.java
index 0ac7fe8a7..500dc0000 100644
--- a/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxMediaUploadResult.java
+++ b/weixin-java-common/src/main/java/me/chanjar/weixin/common/bean/result/WxMediaUploadResult.java
@@ -5,7 +5,8 @@ import me.chanjar.weixin.common.util.json.WxGsonBuilder;
 import java.io.Serializable;
 
 public class WxMediaUploadResult implements Serializable {
-
+  private static final long serialVersionUID = 330834334738622341L;
+  
   private String type;
   private String mediaId;
   private String thumbMediaId;