diff --git a/tox.ini b/tox.ini
index d31f0e6665..0c4d2b47a1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -46,7 +46,7 @@ deps =
     dj21: Django>=2.1,<2.2
 
     postgres: psycopg2>=2.6
-    mysql: mysqlclient==1.3.6
+    mysql: mysqlclient>=1.3.7,<1.4
     elasticsearch2: elasticsearch>=2,<3
     elasticsearch5: elasticsearch>=5,<6
     elasticsearch5: certifi