diff --git a/src/content/docs/r2/examples/aws/aws-sdk-java.mdx b/src/content/docs/r2/examples/aws/aws-sdk-java.mdx
index 1a670b6cf0abaf..1fd21e6027ab74 100644
--- a/src/content/docs/r2/examples/aws/aws-sdk-java.mdx
+++ b/src/content/docs/r2/examples/aws/aws-sdk-java.mdx
@@ -10,6 +10,18 @@ import { Render } from "~/components";
 
 This example uses version 2 of the [aws-sdk-java](https://github.com/aws/aws-sdk-java-v2/#using-the-sdk) package. You must pass in the R2 configuration credentials when instantiating your `S3` service client:
 
+:::note[Compatibility]
+Client version `2.30.0` introduced a modification to the default checksum behavior from the client that is currently incompatible with R2 APIs.
+
+To mitigate, users can use `2.29.52` or add the following to their S3Config:
+
+```java
+this.requestChecksumCalculation = "when_required",
+this.responseChecksumValidation = "when_required"
+```
+
+:::
+
 ```java
 import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
 import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
diff --git a/src/content/docs/r2/examples/aws/aws-sdk-php.mdx b/src/content/docs/r2/examples/aws/aws-sdk-php.mdx
index 03b366629b5767..d956e5999cbfdc 100644
--- a/src/content/docs/r2/examples/aws/aws-sdk-php.mdx
+++ b/src/content/docs/r2/examples/aws/aws-sdk-php.mdx
@@ -12,6 +12,18 @@ import { Render } from "~/components";
 
 This example uses version 3 of the [aws-sdk-php](https://packagist.org/packages/aws/aws-sdk-php) package. You must pass in the R2 configuration credentials when instantiating your `S3` service client:
 
+:::note[Compatibility]
+Client version `3.337.0` introduced a modification to the default checksum behavior from the client that is currently incompatible with R2 APIs.
+
+To mitigate, users can use `3.336.15` or add the following to their $options:
+
+```php
+'request_checksum_calculation' => 'when_required',
+'response_checksum_validation' => 'when_required'
+```
+
+:::
+
 ```php
 <?php
 require 'vendor/aws/aws-autoloader.php';
diff --git a/src/content/docs/r2/examples/aws/aws-sdk-ruby.mdx b/src/content/docs/r2/examples/aws/aws-sdk-ruby.mdx
index 0a915ae81f89fc..dc2249af3e3d57 100644
--- a/src/content/docs/r2/examples/aws/aws-sdk-ruby.mdx
+++ b/src/content/docs/r2/examples/aws/aws-sdk-ruby.mdx
@@ -1,15 +1,27 @@
 ---
 title: aws-sdk-ruby
 pcx_content_type: example
-
 ---
 
-import { Render } from "~/components"
+import { Render } from "~/components";
 
-<Render file="keys" /><br/>
+<Render file="keys" />
+<br />
 
 Many Ruby projects also store these credentials in environment variables instead.
 
+:::note[Compatibility]
+Client version `1.178.0` introduced a modification to the default checksum behavior from the client that is currently incompatible with R2 APIs.
+
+To mitigate, users can use `1.177.0` or add the following to their s3 client instantiation:
+
+```ruby
+request_checksum_calculation: "when_required",
+response_checksum_validation: "when_required"
+```
+
+:::
+
 Add the following dependency to your `Gemfile`:
 
 ```ruby
diff --git a/src/content/docs/r2/examples/aws/boto3.mdx b/src/content/docs/r2/examples/aws/boto3.mdx
index 0eb2e3a1b94d03..9370ea23248a40 100644
--- a/src/content/docs/r2/examples/aws/boto3.mdx
+++ b/src/content/docs/r2/examples/aws/boto3.mdx
@@ -10,6 +10,18 @@ import { Render } from "~/components";
 
 You must configure [`boto3`](https://boto3.amazonaws.com/v1/documentation/api/latest/index.html) to use a preconstructed `endpoint_url` value. This can be done through any `boto3` usage that accepts connection arguments; for example:
 
+:::note[Compatibility]
+Client version `1.36.0` introduced a modification to the default checksum behavior from the client that is currently incompatible with R2 APIs.
+
+To mitigate, users can use `1.35.99` or add the following to their s3 resource config:
+
+```python
+request_checksum_calculation = 'WHEN_REQUIRED',
+response_checksum_validation = 'WHEN_REQUIRED'
+```
+
+:::
+
 ```python
 import boto3