diff --git a/MANIFEST.in b/MANIFEST.in
index 3e73ece4..e7cee955 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,5 @@
 include README.rst
 include LICENSE.txt
 include AUTHORS.txt
-include jedi/mixin/*.py
+include jedi/mixin/*.pym
 recursive-exclude * *.pyc