diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankBranchesResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankBranchesResult.java
index 72cc4f6a7..a0ee6d3d9 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankBranchesResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankBranchesResult.java
@@ -144,7 +144,10 @@ public class BankBranchesResult implements Serializable {
 
   @Getter
   @Setter
-  public static class BankBranch {
+  public static class BankBranch implements Serializable {
+
+    private static final long serialVersionUID = -3500020131951579476L;
+
     /**
      * <pre>
      * 字段名：开户银行支行名称
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankInfo.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankInfo.java
index 89756b07d..adafc9b28 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankInfo.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankInfo.java
@@ -5,6 +5,8 @@ import lombok.Data;
 import lombok.Getter;
 import lombok.Setter;
 
+import java.io.Serializable;
+
 /**
  * 银行信息
  *
@@ -12,7 +14,10 @@ import lombok.Setter;
  * created on  2022/5/12
  **/
 @Data
-public class BankInfo {
+public class BankInfo implements Serializable {
+
+  private static final long serialVersionUID = 1L;
+
   /**
    * 银行别名
    */
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankingResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankingResult.java
index 407ad5fc5..1d3a48c20 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankingResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/BankingResult.java
@@ -43,7 +43,10 @@ public class BankingResult implements Serializable {
 
   @Getter
   @Setter
-  public static class Link {
+  public static class Link implements Serializable {
+
+    private static final long serialVersionUID = -8372812998971715894L;
+
     /**
      * 下一页链接
      */
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/CitiesResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/CitiesResult.java
index b5bf87c81..b6914ee81 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/CitiesResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/CitiesResult.java
@@ -47,7 +47,10 @@ public class CitiesResult implements Serializable {
 
   @Getter
   @Setter
-  public static class CityInfo {
+  public static class CityInfo implements Serializable {
+
+    private static final long serialVersionUID = -6089905695087974693L;
+
     /**
      * <pre>
      * 字段名：城市名称
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/ProvincesResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/ProvincesResult.java
index 6525fc1c9..162c97634 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/ProvincesResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/bank/ProvincesResult.java
@@ -47,7 +47,9 @@ public class ProvincesResult implements Serializable {
 
   @Getter
   @Setter
-  public static class ProvinceInfo {
+  public static class ProvinceInfo implements Serializable {
+
+    private static final long serialVersionUID = -4118613374545722650L;
 
     /**
      * <pre>
diff --git a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/FundBillResult.java b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/FundBillResult.java
index 206cd1218..077c2c233 100644
--- a/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/FundBillResult.java
+++ b/weixin-java-pay/src/main/java/com/github/binarywang/wxpay/bean/ecommerce/FundBillResult.java
@@ -48,7 +48,9 @@ public class FundBillResult implements Serializable {
   private FundBill[] downloadBillList;
 
   @Data
-  public static class FundBill {
+  public static class FundBill implements Serializable {
+
+    private static final long serialVersionUID = 4008480977464421822L;
 
     /**
      * <pre>