diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4289ab3d444..78fe1f7ae4c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - A `TextMapPropagator` and associated `TextMapCarrier` are added to the `go.opentelemetry.io/otel/oteltest` package to test TextMap type propagators and their use. (#1259)
 - `SpanContextFromContext` returns `SpanContext` from context. (#1255)
 - Add an opencensus to opentelemetry tracing bridge. (#1305)
+- Add a parent context argument to `SpanProcessor.OnStart` to follow the specification. (#1333)
 
 ### Changed