diff --git a/src/OpenTelemetry.Api/CHANGELOG.md b/src/OpenTelemetry.Api/CHANGELOG.md
index fac63e7c93c..a86ff8e244c 100644
--- a/src/OpenTelemetry.Api/CHANGELOG.md
+++ b/src/OpenTelemetry.Api/CHANGELOG.md
@@ -9,6 +9,10 @@ Notes](../../RELEASENOTES.md).
 * Add support for .NET 10.0.
   ([#6307](https://github.com/open-telemetry/opentelemetry-dotnet/pull/6307))
 
+* Update `System.Diagnostics.DiagnosticSource` dependency to `10.0.0`
+  for all target frameworks.
+  ([#6307](https://github.com/open-telemetry/opentelemetry-dotnet/pull/6307))
+
 ## 1.13.1
 
 Released 2025-Oct-09