diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8ca5d28981c..87bbe730223 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@
 * Enhancement - Replace the empty container with Docker local volume
 * Enhancement - Deprecate support for Docker version older than 1.9.0 [#1477](https://github.com/aws/amazon-ecs-agent/pull/1477)
 
+## 1.19.1
+* Bug - Fixed a bug where responses of introspection API break backward compatibility [#1473](https://github.com/aws/amazon-ecs-agent/pull/1473)
+
 ## 1.19.0
 * Feature - Private registry can be authenticated through task definition using AWS Secrets Manager [#1427](https://github.com/aws/amazon-ecs-agent/pull/1427)