diff --git a/xlsx/scripts/office/schemas/ecma/fouth-edition/opc-relationships.xsd b/xlsx/scripts/office/schemas/ecma/fouth-edition/opc-relationships.xsd
new file mode 100644
index 0000000..3f38cf2
--- /dev/null
+++ b/xlsx/scripts/office/schemas/ecma/fouth-edition/opc-relationships.xsd
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+ xmlns="http://schemas.openxmlformats.org/package/2006/relationships"
+ targetNamespace="http://schemas.openxmlformats.org/package/2006/relationships"
+ elementFormDefault="qualified">
+ <xsd:element name="Relationships" type="CT_Relationships"/>
+ <xsd:complexType name="CT_Relationships">
+  <xsd:sequence>
+   <xsd:element name="Relationship" type="CT_Relationship" minOccurs="0" maxOccurs="unbounded"/>
+  </xsd:sequence>
+ </xsd:complexType>
+ <xsd:complexType name="CT_Relationship">
+  <xsd:attribute name="Id" type="xsd:string" use="required"/>
+  <xsd:attribute name="Type" type="xsd:anyURI" use="required"/>
+  <xsd:attribute name="Target" type="xsd:string" use="required"/>
+  <xsd:attribute name="TargetMode" type="xsd:string" use="optional"/>
+ </xsd:complexType>
+</xsd:schema>