diff --git a/manifest.json b/manifest.json
index 916833df0..0b7064938 100644
--- a/manifest.json
+++ b/manifest.json
@@ -1,6 +1,6 @@
 {
     "variables": {
-        "${LATEST}": "3.321.2"
+        "${LATEST}": "3.321.4"
     },
     "endpoints": "https://raw.githubusercontent.com/aws/aws-sdk-php/${LATEST}/src/data/endpoints.json",
     "services": {
diff --git a/src/Service/CloudWatchLogs/CHANGELOG.md b/src/Service/CloudWatchLogs/CHANGELOG.md
index 0b6564970..05f2f01d2 100644
--- a/src/Service/CloudWatchLogs/CHANGELOG.md
+++ b/src/Service/CloudWatchLogs/CHANGELOG.md
@@ -10,6 +10,7 @@
 ### Changed
 
 - Enable compiler optimization for the `sprintf` function.
+- AWS enhancement: Documentation updates.
 
 ## 2.2.1
 
diff --git a/src/Service/CloudWatchLogs/src/Input/PutLogEventsRequest.php b/src/Service/CloudWatchLogs/src/Input/PutLogEventsRequest.php
index a8de54a4c..ce37f819a 100644
--- a/src/Service/CloudWatchLogs/src/Input/PutLogEventsRequest.php
+++ b/src/Service/CloudWatchLogs/src/Input/PutLogEventsRequest.php
@@ -50,7 +50,7 @@ final class PutLogEventsRequest extends Input
     private $sequenceToken;
 
     /**
-     * Reserved for future use.
+     * Reserved for internal use.
      *
      * @var Entity|null
      */
diff --git a/src/Service/CloudWatchLogs/src/Result/PutLogEventsResponse.php b/src/Service/CloudWatchLogs/src/Result/PutLogEventsResponse.php
index e807a255f..f7d5ad83b 100644
--- a/src/Service/CloudWatchLogs/src/Result/PutLogEventsResponse.php
+++ b/src/Service/CloudWatchLogs/src/Result/PutLogEventsResponse.php
@@ -30,7 +30,7 @@ class PutLogEventsResponse extends Result
     private $rejectedLogEventsInfo;
 
     /**
-     * Reserved for future use.
+     * Reserved for internal use.
      *
      * @var RejectedEntityInfo|null
      */
diff --git a/src/Service/CloudWatchLogs/src/ValueObject/Entity.php b/src/Service/CloudWatchLogs/src/ValueObject/Entity.php
index 2f5c33c20..4d972e68c 100644
--- a/src/Service/CloudWatchLogs/src/ValueObject/Entity.php
+++ b/src/Service/CloudWatchLogs/src/ValueObject/Entity.php
@@ -3,19 +3,19 @@
 namespace AsyncAws\CloudWatchLogs\ValueObject;
 
 /**
- * Reserved for future use.
+ * Reserved for internal use.
  */
 final class Entity
 {
     /**
-     * Reserved for future use.
+     * Reserved for internal use.
      *
      * @var array<string, string>|null
      */
     private $keyAttributes;
 
     /**
-     * Reserved for future use.
+     * Reserved for internal use.
      *
      * @var array<string, string>|null
      */
diff --git a/src/Service/CloudWatchLogs/src/ValueObject/RejectedEntityInfo.php b/src/Service/CloudWatchLogs/src/ValueObject/RejectedEntityInfo.php
index b21795d75..7d69d7749 100644
--- a/src/Service/CloudWatchLogs/src/ValueObject/RejectedEntityInfo.php
+++ b/src/Service/CloudWatchLogs/src/ValueObject/RejectedEntityInfo.php
@@ -6,12 +6,12 @@
 use AsyncAws\Core\Exception\InvalidArgument;
 
 /**
- * Reserved for future use.
+ * Reserved for internal use.
  */
 final class RejectedEntityInfo
 {
     /**
-     * Reserved for future use.
+     * Reserved for internal use.
      *
      * @var EntityRejectionErrorType::*
      */