diff --git a/docs/Language Feature Status.md b/docs/Language Feature Status.md
index 634014d456ac5..161f785e312b1 100644
--- a/docs/Language Feature Status.md	
+++ b/docs/Language Feature Status.md	
@@ -14,6 +14,7 @@ efforts behind them.
 | [Dictionary expressions](https://github.com/dotnet/csharplang/issues/8659) | [dictionary-expressions](https://github.com/dotnet/roslyn/tree/features/dictionary-expressions) | [In progress](https://github.com/dotnet/roslyn/issues/76310) | [333fred](https://github.com/333fred)  | [CyrusNajmabadi](https://github.com/CyrusNajmabadi), [jcouv](https://github.com/jcouv) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
 | [Collection expression arguments](https://github.com/dotnet/csharplang/issues/8887) | [collection-expression-arguments](https://github.com/dotnet/roslyn/tree/features/collection-expression-arguments) | [In progress](https://github.com/dotnet/roslyn/issues/80613) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) | [333fred](https://github.com/333fred), [jcouv](https://github.com/jcouv) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi) |
 | [Unions](https://github.com/dotnet/csharplang/issues/9662) | | In Progress | [AlekseyTs](https://github.com/AlekseyTs) | [RikkiGibson](https://github.com/RikkiGibson), [333fred](https://github.com/333fred) | TBD | |
+| [Closed class hierarchies](https://github.com/dotnet/csharplang/issues/9499) | [closed-class](https://github.com/dotnet/roslyn/tree/features/closed-class) | [In progress](https://github.com/dotnet/roslyn/issues/81039) | [RikkiGibson](https://github.com/RikkiGibson) | [AlekseyTs](https://github.com/AlekseyTs), [jjonescz](https://github.com/jjonescz) | TBD | [mattwar](https://github.com/mattwar) |
 # Working Set VB
 
 # C# 14.0