diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCreateAuthChallengeEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCreateAuthChallengeEvent.java
index 6739d27f..6074ca9b 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCreateAuthChallengeEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCreateAuthChallengeEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolCreateAuthChallengeEvent extends CognitoUserPoolEvent {
 
     /**
@@ -56,6 +57,7 @@ public CognitoUserPoolCreateAuthChallengeEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the create auth challenge trigger.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCustomMessageEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCustomMessageEvent.java
index f8642c75..403f8539 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCustomMessageEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolCustomMessageEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolCustomMessageEvent extends CognitoUserPoolEvent {
     /**
      * The request from the Amazon Cognito service.
@@ -55,6 +56,7 @@ public CognitoUserPoolCustomMessageEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the custom message trigger.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolDefineAuthChallengeEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolDefineAuthChallengeEvent.java
index 33fcf53a..8577c9f7 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolDefineAuthChallengeEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolDefineAuthChallengeEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolDefineAuthChallengeEvent extends CognitoUserPoolEvent {
 
     /**
@@ -56,6 +57,7 @@ public CognitoUserPoolDefineAuthChallengeEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the define auth challenge trigger.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolMigrateUserEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolMigrateUserEvent.java
index ee47c360..381010a7 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolMigrateUserEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolMigrateUserEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolMigrateUserEvent extends CognitoUserPoolEvent {
     /**
      * The request from the Amazon Cognito service.
@@ -55,6 +56,7 @@ public CognitoUserPoolMigrateUserEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * The username entered by the user.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostAuthenticationEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostAuthenticationEvent.java
index 5d2f5089..de1af656 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostAuthenticationEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostAuthenticationEvent.java
@@ -16,6 +16,7 @@
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
+import lombok.ToString;
 
 import java.util.Map;
 
@@ -29,6 +30,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolPostAuthenticationEvent extends CognitoUserPoolEvent {
 
     /**
@@ -52,6 +54,7 @@ public CognitoUserPoolPostAuthenticationEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the post authentication trigger.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostConfirmationEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostConfirmationEvent.java
index 340b2a88..4a835489 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostConfirmationEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPostConfirmationEvent.java
@@ -16,6 +16,7 @@
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
+import lombok.ToString;
 
 import java.util.Map;
 
@@ -29,6 +30,7 @@
 @EqualsAndHashCode(callSuper = true)
 @Data
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolPostConfirmationEvent extends CognitoUserPoolEvent {
 
     /**
@@ -52,6 +54,7 @@ public CognitoUserPoolPostConfirmationEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the post confirmation trigger.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreAuthenticationEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreAuthenticationEvent.java
index 26f45bb9..11016041 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreAuthenticationEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreAuthenticationEvent.java
@@ -16,6 +16,7 @@
 import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
+import lombok.ToString;
 
 import java.util.Map;
 
@@ -29,6 +30,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolPreAuthenticationEvent extends CognitoUserPoolEvent {
 
     /**
@@ -52,6 +54,7 @@ public CognitoUserPoolPreAuthenticationEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more name-value pairs containing the validation data in the request to register a user.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreSignUpEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreSignUpEvent.java
index 2a7f0e3f..da7a848e 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreSignUpEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreSignUpEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolPreSignUpEvent extends CognitoUserPoolEvent {
 
     /**
@@ -56,6 +57,7 @@ public CognitoUserPoolPreSignUpEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more name-value pairs containing the validation data in the request to register a user.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreTokenGenerationEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreTokenGenerationEvent.java
index db73bbd9..e49ce3c4 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreTokenGenerationEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolPreTokenGenerationEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolPreTokenGenerationEvent extends CognitoUserPoolEvent {
     /**
      * The request from the Amazon Cognito service.
@@ -55,6 +56,7 @@ public CognitoUserPoolPreTokenGenerationEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the pre token generation trigger.
diff --git a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolVerifyAuthChallengeResponseEvent.java b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolVerifyAuthChallengeResponseEvent.java
index c8de149e..982ff72f 100644
--- a/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolVerifyAuthChallengeResponseEvent.java
+++ b/aws-lambda-java-events/src/main/java/com/amazonaws/services/lambda/runtime/events/CognitoUserPoolVerifyAuthChallengeResponseEvent.java
@@ -26,6 +26,7 @@
 @Data
 @EqualsAndHashCode(callSuper = true)
 @NoArgsConstructor
+@ToString(callSuper = true)
 public class CognitoUserPoolVerifyAuthChallengeResponseEvent extends CognitoUserPoolEvent {
     /**
      * The request from the Amazon Cognito service.
@@ -55,6 +56,7 @@ public CognitoUserPoolVerifyAuthChallengeResponseEvent(
     @Data
     @EqualsAndHashCode(callSuper = true)
     @NoArgsConstructor
+    @ToString(callSuper = true)
     public static class Request extends CognitoUserPoolEvent.Request {
         /**
          * One or more key-value pairs that you can provide as custom input to the Lambda function that you specify for the verify auth challenge trigger.