[releng] Updates for 2021-03 XSD 2.25
diff --git a/plugins/org.eclipse.xsd/XSD.setup b/plugins/org.eclipse.xsd/XSD.setup
index 1db05d6..57638f1 100644
--- a/plugins/org.eclipse.xsd/XSD.setup
+++ b/plugins/org.eclipse.xsd/XSD.setup
@@ -150,6 +150,13 @@
       <sourceLocator
           rootFolder="${xsd.git.clone.location}"/>
       <repositoryList
+          name="2021-03">
+        <repository
+            url="http://download.eclipse.org/releases/2021-03"/>
+        <repository
+            url="http://download.eclipse.org/modeling/emf/emf/builds/milestone/latest"/>
+      </repositoryList>
+      <repositoryList
           name="2020-12">
         <repository
             url="http://download.eclipse.org/releases/2020-12"/>