diff --git a/experimental/CHANGELOG.md b/experimental/CHANGELOG.md
index 02d6ab567a..08f93295d3 100644
--- a/experimental/CHANGELOG.md
+++ b/experimental/CHANGELOG.md
@@ -13,6 +13,7 @@ All notable changes to experimental packages in this project will be documented
 * feat(exporter-logs-otlp-grpc): otlp-grpc exporter for logs. [#3712](https://github.com/open-telemetry/opentelemetry-js/pull/3712/) @llc1123
 * feat(otlp-grpc-exporter-base): use statically generated protobuf code [#3705](https://github.com/open-telemetry/opentelemetry-js/pull/3705) @pichlermarc
 * refactor(otlp-transformer): refine metric transformers. [#3770](https://github.com/open-telemetry/opentelemetry-js/pull/3770/) @llc1123
+* feat(api-logs): add `ObservedTimestamp` to `LogRecord`. [#3787](https://github.com/open-telemetry/opentelemetry-js/pull/3787/) @llc1123
 
 ### :bug: (Bug Fix)