diff --git a/docx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesCustom.xsd b/docx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesCustom.xsd
new file mode 100644
index 0000000..6d2cb1b
--- /dev/null
+++ b/docx/scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesCustom.xsd
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+  xmlns="http://schemas.openxmlformats.org/officeDocument/2006/custom-properties"
+  xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
+  xmlns:s="http://schemas.openxmlformats.org/officeDocument/2006/sharedTypes"
+  targetNamespace="http://schemas.openxmlformats.org/officeDocument/2006/custom-properties"
+  blockDefault="#all" elementFormDefault="qualified">
+  <xsd:import namespace="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"
+    schemaLocation="shared-documentPropertiesVariantTypes.xsd"/>
+  <xsd:import namespace="http://schemas.openxmlformats.org/officeDocument/2006/sharedTypes"
+    schemaLocation="shared-commonSimpleTypes.xsd"/></xsd:schema>
\ No newline at end of file