diff --git a/C#-and-.NET-docs-supplement.md b/C#-and-.NET-docs-supplement.md
index cc905f4..a632d5d 100644
--- a/C#-and-.NET-docs-supplement.md
+++ b/C#-and-.NET-docs-supplement.md
@@ -158,7 +158,9 @@ WinForms' `Label.Text` stops reading at the first NUL for measurement/rendering,
 
 ## `[Obsolete]` only works on base declarations
 
-See [dotnet/csharplang#2652](https://github.com/dotnet/csharplang/issues/2652).
+See ~~dotnet/csharplang#2652~~ [dotnet/csharplang#8937](https://github.com/dotnet/csharplang/issues/8937) (something something [convenient place](https://github.com/dotnet/maui/discussions/339#discussioncomment-345659)).
+
+We have the diagnostic `CS0809` enabled to help avoid this mistake, but [even that's not foolproof](https://github.com/dotnet/roslyn/issues/78548).
 
 ## Out-of-range `Span` slices throw `ArgumentOutOfRangeException` with wrong param name