diff --git a/MANIFEST.in b/MANIFEST.in
index 337e6cce..d50c83d3 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-recursive-include passerelle *.html *.mako *.txt *.xsd README
+recursive-include passerelle *.html *.mako *.txt *.xsd *.XSD README
 recursive-include passerelle/static *
 recursive-include passerelle/apps/*/static *