diff --git a/src/OpenTelemetry.Exporter.OneCollector/CHANGELOG.md b/src/OpenTelemetry.Exporter.OneCollector/CHANGELOG.md
index a0f00e0852..f3ad78eb10 100644
--- a/src/OpenTelemetry.Exporter.OneCollector/CHANGELOG.md
+++ b/src/OpenTelemetry.Exporter.OneCollector/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+## 1.9.0-rc.1
+
+Released 2024-Jun-11
+
 * Update OpenTelemetry SDK version to `1.9.0-rc.1`.
   ([#1876](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/1876))