diff --git a/MANIFEST.in b/MANIFEST.in
index 3487b52..18dd4a9 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 *.h *.cpp
 recursive-include bob/measure/data *.*