diff --git a/src/Microsoft.Graph/Microsoft.Graph.Beta.csproj b/src/Microsoft.Graph/Microsoft.Graph.Beta.csproj
index 4ef80d4fdf8..b97a3a16ac3 100644
--- a/src/Microsoft.Graph/Microsoft.Graph.Beta.csproj
+++ b/src/Microsoft.Graph/Microsoft.Graph.Beta.csproj
@@ -22,6 +22,7 @@
     <AssemblyOriginatorKeyFile>35MSSharedLib1024.snk</AssemblyOriginatorKeyFile>
     <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
     <PackageReleaseNotes>
+- Use concurrent dictionary for serialization registry to avoid race conditions.
 - Adds support for nullable reference types.
 - Latest metadata updates from 24th January 2023 snapshot.
     </PackageReleaseNotes>