diff --git a/debian/control b/debian/control
index fe3b8cc3..8c43db43 100644
--- a/debian/control
+++ b/debian/control
@@ -24,7 +24,7 @@ Build-depends-indep: alembic (>= 0.4.1),
                      python-mock (>= 1.0),
                      python-networkx (>= 1.8),
                      python-oslosphinx,
-                     python-six (>= 1.5.2),
+                     python-six (>= 1.6.0),
                      python-sphinx,
                      python-sqlalchemy (>= 0.7.8),
                      python-stevedore (>= 0.14),
@@ -50,7 +50,7 @@ Depends: alembic (>= 0.4.1),
          python-iso8601 (>= 0.1.9),
          python-networkx (>= 1.8),
          python-pbr (>= 0.6),
-         python-six (>= 1.5.2),
+         python-six (>= 1.6.0),
          python-sqlalchemy (>= 0.7.8),
          python-stevedore (>= 0.14),
          ${misc:Depends},