diff --git a/python-testtools.spec b/python-testtools.spec
index 5a1d6de..87e0d41 100644
--- a/python-testtools.spec
+++ b/python-testtools.spec
@@ -36,7 +36,7 @@ Requires:       python-pbr >= 0.11
 Requires:       python-python-mimeparse
 Requires:       python-six >= 1.4.0
 Requires:       python-traceback2
-Requires:       python-unittest2
+Requires:       python-unittest2 >= 1.1.0
 BuildArch:      noarch
 %if 0%{?suse_version} >= 1000 || 0%{?fedora_version} >= 24
 Recommends:     python-fixtures >= 1.3.0