diff --git a/include/windows.foundation.idl b/include/windows.foundation.idl
index 6d66070ad55..6e0062ad0bf 100644
--- a/include/windows.foundation.idl
+++ b/include/windows.foundation.idl
@@ -27,6 +27,51 @@ import "inspectable.idl";
 
 namespace Windows {
     namespace Foundation {
+        [version(0x06020000)]
+        enum PropertyType {
+            Empty       = 0,
+            UInt8       = 1,
+            Int16       = 2,
+            UInt16      = 3,
+            Int32       = 4,
+            UInt32      = 5,
+            Int64       = 6,
+            UInt64      = 7,
+            Single      = 8,
+            Double      = 9,
+            Char16      = 10,
+            Boolean     = 11,
+            String      = 12,
+            Inspectable = 13,
+            DateTime    = 14,
+            TimeSpan    = 15,
+            Guid        = 16,
+            Point       = 17,
+            Size        = 18,
+            Rect        = 19,
+            OtherType   = 20,
+            UInt8Array       = 1025,
+            Int16Array       = 1026,
+            UInt16Array      = 1027,
+            Int32Array       = 1028,
+            UInt32Array      = 1029,
+            Int64Array       = 1030,
+            UInt64Array      = 1031,
+            SingleArray      = 1032,
+            DoubleArray      = 1033,
+            Char16Array      = 1034,
+            BooleanArray     = 1035,
+            StringArray      = 1036,
+            InspectableArray = 1037,
+            DateTimeArray    = 1038,
+            TimeSpanArray    = 1039,
+            GuidArray        = 1040,
+            PointArray       = 1041,
+            SizeArray        = 1042,
+            RectArray        = 1043,
+            OtherTypeArray   = 1044
+        };
+
         [
             version(0x06030000),
             uuid(96369f54-8eb6-48f0-abce-c1b211e627c3)