diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e52d25bd6..7c5d7c757d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 IMPROVEMENTS:
 
 * backend/azurerm: Support for authenticating using the Azure CLI [GH-19465]
+* backend/s3: Support DynamoDB, IAM, and STS endpoint configurations [GH-19571]
 * core: Enhance service discovery error handling and messaging [GH-19589]
 
 BUG FIXES: