diff --git a/debian/control b/debian/control
index 8f680a78816bf434815bfa019747a53ceb2fd7cb..208fe41dab5afac92b2ee45ed76f58f4399e708c 100644
--- a/debian/control
+++ b/debian/control
@@ -5,6 +5,7 @@ Maintainer: NeuroDebian Team <team@neuro.debian.net>
 Uploaders: Yaroslav Halchenko <debian@onerussian.com>, Michael Hanke <michael.hanke@gmail.com>
 Build-Depends: debhelper (>= 7.0.50), python-all-dev (>= 2.5), python-support (>= 0.6), python-numpy, python-scipy, libsvm-dev (>= 2.84.0), python-sphinx, graphviz, python-nose, python-setuptools, cython, python-matplotlib, ipython, swig
 Standards-Version: 3.9.0
+XS-Python-Version: >= 2.5
 Homepage: http://scikit-learn.sourceforge.net
 Vcs-Browser: http://github.com/yarikoptic/scikit-learn
 Vcs-Git: git://github.com/yarikoptic/scikit-learn.git