diff --git a/docx/scripts/office/schemas/ISO-IEC29500-4_2016/dml-chartDrawing.xsd b/docx/scripts/office/schemas/ISO-IEC29500-4_2016/dml-chartDrawing.xsd
new file mode 100644
index 0000000..c78c822
--- /dev/null
+++ b/docx/scripts/office/schemas/ISO-IEC29500-4_2016/dml-chartDrawing.xsd
@@ -0,0 +1,146 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+  xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main"
+  xmlns="http://schemas.openxmlformats.org/drawingml/2006/chartDrawing"
+  targetNamespace="http://schemas.openxmlformats.org/drawingml/2006/chartDrawing"
+  elementFormDefault="qualified">
+  <xsd:import namespace="http://schemas.openxmlformats.org/drawingml/2006/main"
+    schemaLocation="dml-main.xsd"/>
+  <xsd:complexType name="CT_ShapeNonVisual">
+    <xsd:sequence>
+      <xsd:element name="cNvPr" type="a:CT_NonVisualDrawingProps" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="cNvSpPr" type="a:CT_NonVisualDrawingShapeProps" minOccurs="1" maxOccurs="1"
+      />
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_Shape">
+    <xsd:sequence>
+      <xsd:element name="nvSpPr" type="CT_ShapeNonVisual" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="spPr" type="a:CT_ShapeProperties" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="style" type="a:CT_ShapeStyle" minOccurs="0" maxOccurs="1"/>
+      <xsd:element name="txBody" type="a:CT_TextBody" minOccurs="0" maxOccurs="1"/>
+    </xsd:sequence>
+    <xsd:attribute name="macro" type="xsd:string" use="optional"/>
+    <xsd:attribute name="textlink" type="xsd:string" use="optional"/>
+    <xsd:attribute name="fLocksText" type="xsd:boolean" use="optional" default="true"/>
+    <xsd:attribute name="fPublished" type="xsd:boolean" use="optional" default="false"/>
+  </xsd:complexType>
+  <xsd:complexType name="CT_ConnectorNonVisual">
+    <xsd:sequence>
+      <xsd:element name="cNvPr" type="a:CT_NonVisualDrawingProps" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="cNvCxnSpPr" type="a:CT_NonVisualConnectorProperties" minOccurs="1"
+        maxOccurs="1"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_Connector">
+    <xsd:sequence>
+      <xsd:element name="nvCxnSpPr" type="CT_ConnectorNonVisual" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="spPr" type="a:CT_ShapeProperties" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="style" type="a:CT_ShapeStyle" minOccurs="0" maxOccurs="1"/>
+    </xsd:sequence>
+    <xsd:attribute name="macro" type="xsd:string" use="optional"/>
+    <xsd:attribute name="fPublished" type="xsd:boolean" use="optional" default="false"/>
+  </xsd:complexType>
+  <xsd:complexType name="CT_PictureNonVisual">
+    <xsd:sequence>
+      <xsd:element name="cNvPr" type="a:CT_NonVisualDrawingProps" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="cNvPicPr" type="a:CT_NonVisualPictureProperties" minOccurs="1"
+        maxOccurs="1"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_Picture">
+    <xsd:sequence>
+      <xsd:element name="nvPicPr" type="CT_PictureNonVisual" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="blipFill" type="a:CT_BlipFillProperties" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="spPr" type="a:CT_ShapeProperties" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="style" type="a:CT_ShapeStyle" minOccurs="0" maxOccurs="1"/>
+    </xsd:sequence>
+    <xsd:attribute name="macro" type="xsd:string" use="optional" default=""/>
+    <xsd:attribute name="fPublished" type="xsd:boolean" use="optional" default="false"/>
+  </xsd:complexType>
+  <xsd:complexType name="CT_GraphicFrameNonVisual">
+    <xsd:sequence>
+      <xsd:element name="cNvPr" type="a:CT_NonVisualDrawingProps" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="cNvGraphicFramePr" type="a:CT_NonVisualGraphicFrameProperties"
+        minOccurs="1" maxOccurs="1"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_GraphicFrame">
+    <xsd:sequence>
+      <xsd:element name="nvGraphicFramePr" type="CT_GraphicFrameNonVisual" minOccurs="1"
+        maxOccurs="1"/>
+      <xsd:element name="xfrm" type="a:CT_Transform2D" minOccurs="1" maxOccurs="1"/>
+      <xsd:element ref="a:graphic" minOccurs="1" maxOccurs="1"/>
+    </xsd:sequence>
+    <xsd:attribute name="macro" type="xsd:string" use="optional"/>
+    <xsd:attribute name="fPublished" type="xsd:boolean" use="optional" default="false"/>
+  </xsd:complexType>
+  <xsd:complexType name="CT_GroupShapeNonVisual">
+    <xsd:sequence>
+      <xsd:element name="cNvPr" type="a:CT_NonVisualDrawingProps" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="cNvGrpSpPr" type="a:CT_NonVisualGroupDrawingShapeProps" minOccurs="1"
+        maxOccurs="1"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_GroupShape">
+    <xsd:sequence>
+      <xsd:element name="nvGrpSpPr" type="CT_GroupShapeNonVisual" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="grpSpPr" type="a:CT_GroupShapeProperties" minOccurs="1" maxOccurs="1"/>
+      <xsd:choice minOccurs="0" maxOccurs="unbounded">
+        <xsd:element name="sp" type="CT_Shape"/>
+        <xsd:element name="grpSp" type="CT_GroupShape"/>
+        <xsd:element name="graphicFrame" type="CT_GraphicFrame"/>
+        <xsd:element name="cxnSp" type="CT_Connector"/>
+        <xsd:element name="pic" type="CT_Picture"/>
+      </xsd:choice>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:group name="EG_ObjectChoices">
+    <xsd:sequence>
+      <xsd:choice minOccurs="1" maxOccurs="1">
+        <xsd:element name="sp" type="CT_Shape"/>
+        <xsd:element name="grpSp" type="CT_GroupShape"/>
+        <xsd:element name="graphicFrame" type="CT_GraphicFrame"/>
+        <xsd:element name="cxnSp" type="CT_Connector"/>
+        <xsd:element name="pic" type="CT_Picture"/>
+      </xsd:choice>
+    </xsd:sequence>
+  </xsd:group>
+  <xsd:simpleType name="ST_MarkerCoordinate">
+    <xsd:restriction base="xsd:double">
+      <xsd:minInclusive value="0.0"/>
+      <xsd:maxInclusive value="1.0"/>
+    </xsd:restriction>
+  </xsd:simpleType>
+  <xsd:complexType name="CT_Marker">
+    <xsd:sequence>
+      <xsd:element name="x" type="ST_MarkerCoordinate" minOccurs="1" maxOccurs="1"/>
+      <xsd:element name="y" type="ST_MarkerCoordinate" minOccurs="1" maxOccurs="1"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_RelSizeAnchor">
+    <xsd:sequence>
+      <xsd:element name="from" type="CT_Marker"/>
+      <xsd:element name="to" type="CT_Marker"/>
+      <xsd:group ref="EG_ObjectChoices"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:complexType name="CT_AbsSizeAnchor">
+    <xsd:sequence>
+      <xsd:element name="from" type="CT_Marker"/>
+      <xsd:element name="ext" type="a:CT_PositiveSize2D"/>
+      <xsd:group ref="EG_ObjectChoices"/>
+    </xsd:sequence>
+  </xsd:complexType>
+  <xsd:group name="EG_Anchor">
+    <xsd:choice>
+      <xsd:element name="relSizeAnchor" type="CT_RelSizeAnchor"/>
+      <xsd:element name="absSizeAnchor" type="CT_AbsSizeAnchor"/>
+    </xsd:choice>
+  </xsd:group>
+  <xsd:complexType name="CT_Drawing">
+    <xsd:sequence>
+      <xsd:group ref="EG_Anchor" minOccurs="0" maxOccurs="unbounded"/>
+    </xsd:sequence>
+  </xsd:complexType>
+</xsd:schema>
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