[Releng] Use newer platform repository.
diff --git a/releng/org.eclipse.justj.tools.parent/pom.xml b/releng/org.eclipse.justj.tools.parent/pom.xml
index 147f13e..4142a23 100644
--- a/releng/org.eclipse.justj.tools.parent/pom.xml
+++ b/releng/org.eclipse.justj.tools.parent/pom.xml
@@ -53,7 +53,7 @@
     </repository>
     <repository>
       <id>eclipse-platform-repository</id>
-      <url>http://download.eclipse.org/eclipse/updates/4.20-I-builds</url>
+      <url>http://download.eclipse.org/eclipse/updates/4.21-I-builds</url>
       <layout>p2</layout>
     </repository>
   </repositories>