.gitignore  | 1 +
 MANIFEST    | 2 ++
 Makefile.PL | 5 ++++-

diff --git a/.gitignore b/.gitignore
index 18d002106ca35232e46f4b4c4659a15093339986..3b333a520feffa7f2c4790635aacfbf52746474b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 /config.mak
+/MANIFEST.gen
 /Makefile.old
 /pm_to_blib
 /MYMETA.*
diff --git a/MANIFEST b/MANIFEST
index 9c8cc1cce0be75d862c5ae1f31bbfe5c3263e378..17a2a3114f161ce8a9d2ca5a3d53deda015bd425 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -76,6 +76,7 @@ lib/PublicInbox/View.pm
 lib/PublicInbox/WWW.pm
 lib/PublicInbox/WatchMaildir.pm
 lib/PublicInbox/WwwAttach.pm
+lib/PublicInbox/WwwStream.pm
 sa_config/Makefile
 sa_config/README
 sa_config/root/etc/spamassassin/public-inbox.pre
@@ -134,3 +135,4 @@ t/search.t
 t/spawn.t
 t/utf8.mbox
 t/view.t
+t/watch_maildir.t
diff --git a/Makefile.PL b/Makefile.PL
index 171712a709597e4fc826b760d87bef99c801e65f..4a911037c7c6ded4428d5aa2af92779bbe3b6c96 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -47,7 +47,10 @@ 	@\$(PERL) -I lib -c \$(subst .syntax,,\$@)
 
 syntax:: \$(my_syntax)
 
-check:: pure_all
+check-manifest :: MANIFEST
+	if git ls-files >\$<.gen 2>&1; then diff -u \$< \$<.gen; fi
+
+check:: pure_all check-manifest
 	\$(EATMYDATA) prove -lv -j\$(N)
 
 EOF