diff --git a/MANIFEST.in b/MANIFEST.in
index 9d1c2ae05..ca9ecbd5b 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,7 +2,7 @@ include Dockerfile
 include LICENSE
 include requirements.txt
 include requirements-dev.txt
-tox.ini
+include tox.ini
 include *.md
 recursive-include tests *
 global-exclude *.pyc