diff --git a/test_reqs.txt b/test_reqs.txt
index 6127cc5..bb31936 100644
--- a/test_reqs.txt
+++ b/test_reqs.txt
@@ -7,4 +7,4 @@ pep8==1.7.1
 pyflakes==2.1.1
 django-markwhat==1.6.2
 factory_boy==2.11.1
-six==1.12.0
+six==1.13.0