diff --git a/CHANGELOG.md b/CHANGELOG.md
index 50f591d950..b0ca452602 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,7 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
-## Version 1.21.0/0.42b0 (2023-11-01)
+## Version 1.21.0/0.42b0 ()
 
 - `opentelemetry-instrumentation-aiohttp-server` Add instrumentor and auto instrumentation support for aiohttp-server
   ([#1800](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/1800))