diff --git a/MANIFEST.in b/MANIFEST.in
index f356535c..f32e38c2 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,6 +3,7 @@ include CHANGELOG.rst
 include LICENSE.txt
 include AUTHORS.txt
 include .coveragerc
+include sith.py
 include conftest.py
 include pytest.ini
 include tox.ini