diff --git a/debian/control b/debian/control
index 5163435..99cbd52 100644
--- a/debian/control
+++ b/debian/control
@@ -23,7 +23,7 @@ Build-Depends:
  python-requests,
  python-requests-mock,
  python-setuptools,
- python-six,
+ python-six (>= 1.9.0-3~),
  python-tz,
  python3,
  python3-appdirs,
@@ -60,7 +60,7 @@ Depends:
  python-pkg-resources,
  python-requests,
  python-setuptools,
- python-six,
+ python-six (>= 1.9.0-3~),
  python-tz,
  ${misc:Depends},
  ${python:Depends},