diff --git a/MANIFEST b/MANIFEST
index bef4677fa4..099506dfc2 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -183,6 +183,7 @@ lib/telnet.rb
 lib/tempfile.rb
 lib/thread.rb
 lib/thwait.rb
+lib/time.rb
 lib/timeout.rb
 lib/tracer.rb
 lib/weakref.rb