diff --git a/apps/jrobin/java/build.xml b/apps/jrobin/java/build.xml
index c569ddfec..2cf49899e 100644
--- a/apps/jrobin/java/build.xml
+++ b/apps/jrobin/java/build.xml
@@ -66,6 +66,8 @@
                 <attribute name="Build-Date" value="${build.timestamp}" />
                 <attribute name="Base-Revision" value="${workspace.version}" />
                 <attribute name="Workspace-Changes" value="${workspace.changes.tr}" />
+                <attribute name="X-Compile-Source-JDK" value="${javac.version}" />
+                <attribute name="X-Compile-Target-JDK" value="${javac.version}" />
             </manifest>
         </jar>
     </target>