diff --git a/src/DotNet/ExportedType.cs b/src/DotNet/ExportedType.cs
index 270f556f..4cccc504 100644
--- a/src/DotNet/ExportedType.cs
+++ b/src/DotNet/ExportedType.cs
@@ -337,6 +337,11 @@ public TypeAttributes Layout {
 		/// </summary>
 		public bool IsExplicitLayout => ((TypeAttributes)attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExplicitLayout;
 
+		/// <summary>
+		/// <c>true</c> if <see cref="TypeAttributes.ExtendedLayout"/> is set
+		/// </summary>
+		public bool IsExtendedLayout => ((TypeAttributes)attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExtendedLayout;
+
 		/// <summary>
 		/// Gets/sets the <see cref="TypeAttributes.Interface"/> bit
 		/// </summary>
diff --git a/src/DotNet/TypeAttributes.cs b/src/DotNet/TypeAttributes.cs
index 2ae0aa21..bae7b493 100644
--- a/src/DotNet/TypeAttributes.cs
+++ b/src/DotNet/TypeAttributes.cs
@@ -35,6 +35,8 @@ public enum TypeAttributes : uint {
 		SequentialLayout		= 0x00000008,
 		/// <summary>Layout is supplied explicitly</summary>
 		ExplicitLayout			= 0x00000010,
+		/// <summary>Layout is supplied via the System.Runtime.InteropServices.ExtendedLayoutAttribute</summary>
+		ExtendedLayout			= 0x00000018,
 
 		/// <summary>Use this mask to retrieve class semantics information.</summary>
 		ClassSemanticsMask		= 0x00000020,
diff --git a/src/DotNet/TypeDef.cs b/src/DotNet/TypeDef.cs
index e46b36bc..9c2c9432 100644
--- a/src/DotNet/TypeDef.cs
+++ b/src/DotNet/TypeDef.cs
@@ -770,6 +770,11 @@ public TypeAttributes Layout {
 		/// </summary>
 		public bool IsExplicitLayout => ((TypeAttributes)attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExplicitLayout;
 
+		/// <summary>
+		/// <c>true</c> if <see cref="TypeAttributes.ExtendedLayout"/> is set
+		/// </summary>
+		public bool IsExtendedLayout => ((TypeAttributes)attributes & TypeAttributes.LayoutMask) == TypeAttributes.ExtendedLayout;
+
 		/// <summary>
 		/// Gets/sets the <see cref="TypeAttributes.Interface"/> bit
 		/// </summary>