diff --git a/MANIFEST.in b/MANIFEST.in
index 08f59164..37c81375 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,5 @@
 include README.rst LICENSE
+graft tests
+include runtests.py
 recursive-exclude * __pycache__
 recursive-exclude * *.py[co]