diff -r cfb21e03fe2a -r d64a4ef26edb src/Pure/build-jars
--- a/src/Pure/build-jars	Thu Dec 05 17:52:12 2013 +0100
+++ b/src/Pure/build-jars	Thu Dec 05 17:58:03 2013 +0100
@@ -13,6 +13,7 @@
   Concurrent/future.scala
   Concurrent/simple_thread.scala
   Concurrent/volatile.scala
+  General/bytes.scala
   General/exn.scala
   General/file.scala
   General/graph.scala