diff --git a/Available-C#-and-.NET-features.md b/Available-C#-and-.NET-features.md
index 3c3e11c..d7e2fe4 100644
--- a/Available-C#-and-.NET-features.md
+++ b/Available-C#-and-.NET-features.md
@@ -14,6 +14,7 @@ Legend:
 🔵 Availablity in .NET Framework 4.8 (`net48`)  
 🟢 Availablity in .NET Standard 2.0 (`netstandard2.0`)  
 I have not considered Framework 4.7.2 and below as there is little reason not to upgrade to Framework 4.8.
+I have not considered Framework 4.8.1 because it matches Framework 4.8 in terms of language features and is generally not useful.
 I use Standard 2.0 and not Standard 2.1 as the latter is not subsumed by Framework 4.8, rendering it useless.
 
 > Note: .NET calls destructuring "deconstructing", not to be confused with destructing which .NET calls "finalising".