diff --git a/MANIFEST.in b/MANIFEST.in
index bdb12fc9..047ca4ec 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,6 +3,7 @@ include LICENSE
 include NOTICE
 include README.rst
 include THANKS
+include requirements_dev.txt
 recursive-include tests *
 recursive-include examples *
 recursive-include doc *