Index: src/java/org/apache/ivy/plugins/parser/xml/ivy.xsd
===================================================================
--- src/java/org/apache/ivy/plugins/parser/xml/ivy.xsd	(revision 666968)
+++ src/java/org/apache/ivy/plugins/parser/xml/ivy.xsd	(working copy)
@@ -137,6 +137,7 @@
 						            <xs:attribute name="ext" type="xs:string"/>
 						            <xs:attribute name="conf" type="xs:string"/>
 						            <xs:attribute name="url" type="xs:string"/>
+						            <xs:attribute name="classifier" type="xs:string"/>
 						            <xs:anyAttribute namespace="##other" processContents="lax" />
 				            	</xs:complexType>
 				      		</xs:element>
@@ -176,6 +177,7 @@
 									            <xs:attribute name="ext" type="xs:string"/>
 									            <xs:attribute name="conf" type="xs:string"/>
 									            <xs:attribute name="url" type="xs:string"/>
+									            <xs:attribute name="classifier" type="xs:string"/>
 									            <xs:anyAttribute namespace="##other" processContents="lax" />
 							            	</xs:complexType>
 							      		</xs:element>