diff --git a/docs/multilang/configuring-credential-providers.md b/docs/multilang/configuring-credential-providers.md
index d17c84a2..56bde627 100644
--- a/docs/multilang/configuring-credential-providers.md
+++ b/docs/multilang/configuring-credential-providers.md
@@ -10,9 +10,11 @@ This document should help multilang customers configure a suitable `CredentialPr
 
 In a Properties file, an `AwsCredentialsProperty` configuration might look like:
 ```
-AwsCredentialsProvider = StsAssumeRoleCredentialsProvider|<arn>|<sessionName> 
+AwsCredentialsProvider = StsAssumeRoleCredentialsProvider|<arn>|<sessionName>|endpointRegion=us-east-1
 ```
 This basic configuration creates an [StsAssumeRoleCredentialsProvider][sts-assume-provider] with an ARN and session name.
+If `endpointRegion` is not specified, the provider will use the region defined in the AWS config file.
+If no region is found in the config file, the credentials provider will fail.
 
 The providers generated by this config property will be [AWS SDK v2 AwsCredentialsProviders][aws-credentials-provider].
 These differ from the SDK v1 AWSCredentialsProviders in a number of ways. See [Credentials Provider Changes][credentials-provider-changes].
@@ -76,7 +78,7 @@ N.B. Backslash (`\`) is for multi-line legibility and is not required.
 KCL multilang includes a [custom nested property processor for `StsAssumeRole`][kcl-sts-provider].
 Multilang configurations that use `StsAssumeRoleSessionCredentialsProvider` need only prefix `Kcl` to exercise this new provider:
 ```
-AwsCredentialsProvider = KclStsAssumeRoleCredentialsProvider|<arn>|<sessionName>
+AwsCredentialsProvider = KclStsAssumeRoleCredentialsProvider|<arn>|<sessionName>|endpointRegion=us-east-1
 ```
 
 [aws-credentials-provider]: https://sdk.amazonaws.com/java/api/latest/software/amazon/awssdk/auth/credentials/AwsCredentialsProvider.html