diff --git a/MANIFEST.in b/MANIFEST.in
index 71466e2..6e6f21d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -7,4 +7,6 @@ recursive-include pyramid_formalchemy *.gif
 recursive-include pyramid_formalchemy *.png
 recursive-include pyramid_formalchemy *.jpg
 recursive-include pyramid_formalchemy *.py_tmpl
-recursive-include pyramid_formalchemy *.txt
\ No newline at end of file
+recursive-include pyramid_formalchemy *.txt
+recursive-include pyramid_formalchemy *.mo
+recursive-include pyramid_formalchemy *.po