diff --git a/MANIFEST b/MANIFEST
index 8820bd3df3..4bdbc0da2b 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1710,6 +1710,7 @@ t/library/iter.t                                            [test]
 t/library/lwp.t                                             [test]
 t/library/md5.t                                             [test]
 t/library/mime_base64.t                                     [test]
+t/library/mime_base64u.t                                    [test]
 t/library/nciutils.t                                        [test]
 t/library/osutils.t                                         [test]
 t/library/p6object.t                                        [test]