diff --git a/src/OpenTelemetry.Instrumentation.AWSLambda/CHANGELOG.md b/src/OpenTelemetry.Instrumentation.AWSLambda/CHANGELOG.md
index b8623e83f8..db388af70c 100644
--- a/src/OpenTelemetry.Instrumentation.AWSLambda/CHANGELOG.md
+++ b/src/OpenTelemetry.Instrumentation.AWSLambda/CHANGELOG.md
@@ -2,15 +2,17 @@
 
 ## Unreleased
 
-## 1.1.0-beta2
+## 1.1.0-beta.2
 
 Release PR: [#590](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/590)
+& [#639](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/639).
 
 This is the first release with the new package name `OpenTelemetry.Instrumentation.AWSLambda`.
 
 * BREAKING (API, behavior): Rename package to `OpenTelemetry.Instrumentation.AWSLambda`
   (remove `.Contrib`) ([#593](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/593)).
   This also affects the `ActivitySource` name (superseding [#534](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/534)).
+* Pre-release version numbering scheme changed from `.betaN` to `beta.N` ([#639](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/639))
 * BREAKING (API): Move public class `AWSLambdaWrapper` out of `Implementation` subnamespace
   ([#593](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/593))
 * BREAKING (API): Rename overloads of `AWSLambdaWrapper.Trace` that take an async