diff --git a/src/Markup/Avalonia.Markup.Xaml/XamlIl/CompilerExtensions/Transformers/AvaloniaXamlIlTransformInstanceAttachedProperties.cs b/src/Markup/Avalonia.Markup.Xaml/XamlIl/CompilerExtensions/Transformers/AvaloniaXamlIlTransformInstanceAttachedProperties.cs
index bbacef43dd..548f0161d6 100644
--- a/src/Markup/Avalonia.Markup.Xaml/XamlIl/CompilerExtensions/Transformers/AvaloniaXamlIlTransformInstanceAttachedProperties.cs
+++ b/src/Markup/Avalonia.Markup.Xaml/XamlIl/CompilerExtensions/Transformers/AvaloniaXamlIlTransformInstanceAttachedProperties.cs
@@ -164,6 +164,8 @@ namespace Avalonia.Markup.Xaml.XamlIl.CompilerExtensions.Transformers
                 public bool IsStatic => true;
                 public string Name { get; protected set; }
                 public IXamlIlType DeclaringType { get; }
+                public IXamlIlMethod MakeGenericMethod(IReadOnlyList<IXamlIlType> typeArguments) 
+                    => throw new System.NotSupportedException();
 
 
                 public bool Equals(IXamlIlMethod other) =>
diff --git a/src/Markup/Avalonia.Markup.Xaml/XamlIl/xamlil.github b/src/Markup/Avalonia.Markup.Xaml/XamlIl/xamlil.github
index c2ec091f79..d3b1f5bafb 160000
--- a/src/Markup/Avalonia.Markup.Xaml/XamlIl/xamlil.github
+++ b/src/Markup/Avalonia.Markup.Xaml/XamlIl/xamlil.github
@@ -1 +1 @@
-Subproject commit c2ec091f79fb4e1eea629bc823c9c24da7050022
+Subproject commit d3b1f5bafbea93fb70343c76ca53271905976db8