[releng] Update repos used for maven publishing.
diff --git a/releng/org.eclipse.emf.releng/publish/aggr/EMF.aggr b/releng/org.eclipse.emf.releng/publish/aggr/EMF.aggr
index 3044360..2866c7e 100644
--- a/releng/org.eclipse.emf.releng/publish/aggr/EMF.aggr
+++ b/releng/org.eclipse.emf.releng/publish/aggr/EMF.aggr
@@ -60,9 +60,9 @@
       <mavenMappings namePattern="org.objectweb.asm" groupId="org.ow2.asm" artifactId="asm"/>
       <mavenMappings namePattern="org.eclipse.xsd(.*)" groupId="org.eclipse.emf" artifactId="org.eclipse.xsd$1"/>
     </contributions>
-    <validationRepositories location="https://download.eclipse.org/eclipse/updates/4.12"/>
-    <validationRepositories location="https://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.17.0"/>
-    <validationRepositories location="https://download.eclipse.org/modeling/emft/mwe/updates/releases/2.9.1"/>
+    <validationRepositories location="https://download.eclipse.org/eclipse/updates/4.13"/>
+    <validationRepositories location="https://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.20.0"/>
+    <validationRepositories location="http://download.eclipse.org/modeling/emft/mwe/updates/releases/2.11.1"/>
     <validationRepositories location="https://download.eclipse.org/tools/orbit/downloads/latest-R"/>
   </validationSets>
   <configurations architecture="x86_64"/>