diff --git a/requirements.txt b/requirements.txt
index 10bd51eae..c904d722e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ flake8==3.6.0
 
 # Testing
 # ------------------------------------------------------------------------------
-tox==3.6.1
+tox==3.7.0
 pytest==4.1.0
 pytest-cookies==0.3.0