diff --git a/README.md b/README.md
index 76fa431..b22a77b 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
 Amazon SQS Extended Client Library for Java
 ===========================================
-The **Amazon SQS Extended Client Library for Java** enables you to manage Amazon SQS message payloads with Amazon S3. This is especially useful for storing and retrieving messages with a message payload size greater than the current SQS limit of 256 KB, up to a maximum of 2 GB. Specifically, you can use this library to:
+The **Amazon SQS Extended Client Library for Java** enables you to manage Amazon SQS message payloads with Amazon S3. This is especially useful for storing and retrieving messages with a message payload size greater than the current SQS limit of 1 MiB, up to a maximum of 2 GB. Specifically, you can use this library to:
 
-* Specify whether message payloads are always stored in Amazon S3 or only when a message's size exceeds 256 KB.
+* Specify whether message payloads are always stored in Amazon S3 or only when a message's size exceeds 1 MiB.
 
 * Send a message that references a single message object stored in an Amazon S3 bucket.
 
diff --git a/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedAsyncClient.java b/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedAsyncClient.java
index 7ebe3b8..68e4f0f 100644
--- a/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedAsyncClient.java
+++ b/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedAsyncClient.java
@@ -70,7 +70,7 @@
  *
  * <ul>
  * <li>Specify whether messages are always stored in Amazon S3 or only when a
- * message size exceeds 256 KB.</li>
+ * message size exceeds 1 MiB.</li>
  * <li>Send a message that references a single message object stored in an
  * Amazon S3 bucket.</li>
  * <li>Get the corresponding message object from an Amazon S3 bucket.</li>
diff --git a/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClient.java b/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClient.java
index 5b372a9..38b29ab 100644
--- a/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClient.java
+++ b/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClient.java
@@ -93,7 +93,7 @@
  *
  * <ul>
  * <li>Specify whether messages are always stored in Amazon S3 or only when a
- * message size exceeds 256 KB.</li>
+ * message size exceeds 1 MiB.</li>
  * <li>Send a message that references a single message object stored in an
  * Amazon S3 bucket.</li>
  * <li>Get the corresponding message object from an Amazon S3 bucket.</li>
@@ -559,7 +559,7 @@ public ChangeMessageVisibilityResponse changeMessageVisibility(ChangeMessageVisi
      * </p>
      * <p>
      * The maximum allowed individual message size and the maximum total payload size (the sum of the individual lengths
-     * of all of the batched messages) are both 256 KB (262,144 bytes).
+     * of all of the batched messages) are both 1 MiB (1,048,576 bytes).
      * </p>
      * <important>
      * <p>
diff --git a/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClientBase.java b/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClientBase.java
index e6c69e2..7943770 100644
--- a/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClientBase.java
+++ b/src/main/java/com/amazon/sqs/javamessaging/AmazonSQSExtendedClientBase.java
@@ -596,7 +596,7 @@ public GetQueueAttributesResponse getQueueAttributes(GetQueueAttributesRequest g
      * </p>
      * <p>
      * The maximum allowed individual message size and the maximum total payload size (the sum of the individual lengths
-     * of all of the batched messages) are both 256 KB (262,144 bytes).
+     * of all of the batched messages) are both 1 MiB (1,048,576 bytes).
      * </p>
      * <important>
      * <p>
diff --git a/src/main/java/com/amazon/sqs/javamessaging/SQSExtendedClientConstants.java b/src/main/java/com/amazon/sqs/javamessaging/SQSExtendedClientConstants.java
index ad5ad34..1b848e7 100644
--- a/src/main/java/com/amazon/sqs/javamessaging/SQSExtendedClientConstants.java
+++ b/src/main/java/com/amazon/sqs/javamessaging/SQSExtendedClientConstants.java
@@ -29,7 +29,7 @@ public class SQSExtendedClientConstants {
 
     // This constant is shared with SNSExtendedClient
     // SNS team should be notified of any changes made to this
-    public static final int DEFAULT_MESSAGE_SIZE_THRESHOLD = 262144;
+    public static final int DEFAULT_MESSAGE_SIZE_THRESHOLD = 1048576;
 
     public static final String S3_BUCKET_NAME_MARKER = "-..s3BucketName..-";
     public static final String S3_KEY_MARKER = "-..s3Key..-";