diff --git a/manifest.json b/manifest.json
index 20f25e829..40448dfdb 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,6 @@
 {
     "variables": {
-        "${LATEST}": "3.388.5"
+        "${LATEST}": "3.388.6"
     },
     "endpoints": "https://raw.githubusercontent.com/aws/aws-sdk-php/${LATEST}/src/data/endpoints.json",
     "services": {
diff --git a/src/Service/Lambda/CHANGELOG.md b/src/Service/Lambda/CHANGELOG.md
index 90634f251..e4a718ea9 100644
--- a/src/Service/Lambda/CHANGELOG.md
+++ b/src/Service/Lambda/CHANGELOG.md
@@ -6,6 +6,7 @@
 
 - AWS api-change: AWS Lambda Durable Functions now supports customer managed KMS keys. This allows customers to configure a KMS key in Durable Config to have all their durable execution data encrypted.
 - AWS api-change: Add Java 8, 11 and 17 on AL2023 (java8.al2023, java11.al2023, java17.al2023) support to AWS Lambda.
+- AWS api-change: AWS Lambda now returns a new DependencyError value in StateReasonCode and LastUpdateStatusReasonCode to provide more actionable information when a function reaches a failed state due to an error from an upstream dependency or service.
 
 ## 2.16.0
 
diff --git a/src/Service/Lambda/src/Enum/LastUpdateStatusReasonCode.php b/src/Service/Lambda/src/Enum/LastUpdateStatusReasonCode.php
index 0577b87c2..1ce58d95e 100644
--- a/src/Service/Lambda/src/Enum/LastUpdateStatusReasonCode.php
+++ b/src/Service/Lambda/src/Enum/LastUpdateStatusReasonCode.php
@@ -5,6 +5,7 @@
 final class LastUpdateStatusReasonCode
 {
     public const CAPACITY_PROVIDER_SCALING_LIMIT_EXCEEDED = 'CapacityProviderScalingLimitExceeded';
+    public const DEPENDENCY_ERROR = 'DependencyError';
     public const DISABLED_KMSKEY = 'DisabledKMSKey';
     public const DISALLOWED_BY_VPC_ENCRYPTION_CONTROL = 'DisallowedByVpcEncryptionControl';
     public const EC2REQUEST_LIMIT_EXCEEDED = 'EC2RequestLimitExceeded';
@@ -48,6 +49,7 @@ public static function exists(string $value): bool
     {
         return isset([
             self::CAPACITY_PROVIDER_SCALING_LIMIT_EXCEEDED => true,
+            self::DEPENDENCY_ERROR => true,
             self::DISABLED_KMSKEY => true,
             self::DISALLOWED_BY_VPC_ENCRYPTION_CONTROL => true,
             self::EC2REQUEST_LIMIT_EXCEEDED => true,
diff --git a/src/Service/Lambda/src/Enum/StateReasonCode.php b/src/Service/Lambda/src/Enum/StateReasonCode.php
index 73e206939..22bd3b15b 100644
--- a/src/Service/Lambda/src/Enum/StateReasonCode.php
+++ b/src/Service/Lambda/src/Enum/StateReasonCode.php
@@ -6,6 +6,7 @@ final class StateReasonCode
 {
     public const CAPACITY_PROVIDER_SCALING_LIMIT_EXCEEDED = 'CapacityProviderScalingLimitExceeded';
     public const CREATING = 'Creating';
+    public const DEPENDENCY_ERROR = 'DependencyError';
     public const DISABLED_KMSKEY = 'DisabledKMSKey';
     public const DISALLOWED_BY_VPC_ENCRYPTION_CONTROL = 'DisallowedByVpcEncryptionControl';
     public const DRAINING_DURABLE_EXECUTIONS = 'DrainingDurableExecutions';
@@ -53,6 +54,7 @@ public static function exists(string $value): bool
         return isset([
             self::CAPACITY_PROVIDER_SCALING_LIMIT_EXCEEDED => true,
             self::CREATING => true,
+            self::DEPENDENCY_ERROR => true,
             self::DISABLED_KMSKEY => true,
             self::DISALLOWED_BY_VPC_ENCRYPTION_CONTROL => true,
             self::DRAINING_DURABLE_EXECUTIONS => true,