diff --git a/python/MANIFEST.in b/python/MANIFEST.in
index 3e7e655..fce3334 100644
--- a/python/MANIFEST.in
+++ b/python/MANIFEST.in
@@ -2,3 +2,5 @@ include README.rst
 include LICENSE
 include tox.ini
 recursive-include http_ece/tests *
+global-exclude */__pycache__/*
+