diff --git a/debian/control b/debian/control
index 9e66d00..428b0a6 100644
--- a/debian/control
+++ b/debian/control
@@ -12,6 +12,10 @@
  python-sphinx (>= 1.0.7+dfsg) | python3-sphinx,
  python-docutils,
  python2.7-doc,
+ python-six,
+ python3-six,
+ python-pytest,
+ python3-pytest,
 Standards-Version: 3.9.6
 X-Python-Version: >= 2.6
 X-Python3-Version: >= 3.2