diff --git a/MANIFEST.in b/MANIFEST.in
index d96581ac..b40c02b2 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,5 +3,5 @@ recursive-include po *
 recursive-include scenarios *
 recursive-include scripts *
 recursive-include tests *
-include *.dtd *.rng
+include *.dtd *.rng *.in
 include AUTHORS ChangeLog* CODING COPYING INSTALL README* TODO