diff --git a/docx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesExtended.xsd b/docx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesExtended.xsd
new file mode 100644
index 0000000..682eab0
--- /dev/null
+++ b/docx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesExtended.xsd
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+  xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties"
+  xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
+  targetNamespace="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties"
+  elementFormDefault="qualified" blockDefault="#all">
+  <xsd:import namespace="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
+    schemaLocation="shared-documentPropertiesVariantTypes.xsd"/></xsd:schema>
\ No newline at end of file