diff --git a/PInvoke/Ole/PropSys/PropSys.IPropertyChange.cs b/PInvoke/Ole/PropSys/PropSys.IPropertyChange.cs
new file mode 100644
index 00000000..1cd3bff7
--- /dev/null
+++ b/PInvoke/Ole/PropSys/PropSys.IPropertyChange.cs
@@ -0,0 +1,37 @@
+using System;
+using System.Runtime.InteropServices;
+using static Vanara.PInvoke.Ole32;
+
+namespace Vanara.PInvoke
+{
+	public static partial class PropSys
+	{
+		[ComImport, Guid("fc0ca0a7-c316-4fd2-9031-3e628e6d4f23"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+		public interface IObjectWithPropertyKey
+		{
+			void SetPropertyKey(ref PROPERTYKEY key);
+			PROPERTYKEY GetPropertyKey();
+		}
+
+		[ComImport, Guid("f917bc8a-1bba-4478-a245-1bde03eb9431"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+		public interface IPropertyChange : IObjectWithPropertyKey
+		{
+			new void SetPropertyKey(ref PROPERTYKEY key);
+			new PROPERTYKEY GetPropertyKey();
+			void ApplyToPropVariant([In] PROPVARIANT propvarIn, out PROPVARIANT ppropvarOut);
+		}
+
+		[ComImport, Guid("380f5cad-1b5e-42f2-805d-637fd392d31e"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+		public interface IPropertyChangeArray
+		{
+			uint GetCount();
+			[return: MarshalAs(UnmanagedType.Interface)]
+			object GetAt([In] uint iIndex, [MarshalAs(UnmanagedType.LPStruct)] Guid riid);
+			void InsertAt([In] uint iIndex, [In] IPropertyChange ppropChange);
+			void Append([In] IPropertyChange ppropChange);
+			void AppendOrReplace([In] IPropertyChange ppropChange);
+			void RemoveAt([In] uint iIndex);
+			void IsKeyInArray([In] ref PROPERTYKEY key);
+		}
+	}
+}