-Build-Depends: cdbs, debhelper (>= 7), python-all-dev (>= 2.3.5-11), python-central (>= 0.5.6), python-setuptools (>= 0.6b3), python-pyrex (>= 0.9.8), zlib1g-dev (>= 1.2.3)
+Build-Depends: cdbs, debhelper (>= 7), python-all-dev (>= 2.3.5-11), python-central (>= 0.5.6), python-setuptools (>= 0.6b3), python-pyrex (>= 0.9.8), cython (>= 0.11), zlib1g-dev (>= 1.2.3)