diff --git a/MANIFEST.in b/MANIFEST.in
index 7f7ea4c772cd31efda180ef24a3a945d1a596a51..d3b23e8006f723cfb4c75a9c513dc68b5dbd9a38 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,4 +1,4 @@
-include LICENSE README.rst bootstrap.py buildout.cfg
+include LICENSE README.rst bootstrap.py buildout.cfg requirements.txt
 recursive-include doc conf.py *.rst
 recursive-include bob *.cpp *.h
 recursive-include bob/io/base/data *.*