diff --git a/MANIFEST.in b/MANIFEST.in
index c75168672..b2d3fadcf 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,5 @@
 include HISTORY.rst LICENSE README.rst tox.ini
+include requirements*.txt
 graft src/docx/templates
 graft features
 graft tests