diff --git a/Pipfile b/Pipfile
index 898b549b..7446b7b3 100644
--- a/Pipfile
+++ b/Pipfile
@@ -14,7 +14,7 @@ autopep8 = "~=1.5"
 pytest = "~=4.0"
 pytest-cov = "~=2.8"
 
-tox = "~=3.6"
+tox = "~=3.14"
 tox-travis = "~=0.12"
 
 httpretty = "~=0.9"