diff --git a/requirements.txt b/requirements.txt
index ef436ae0e..778d1df40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,6 +8,6 @@ flake8==3.6.0
 
 # Testing
 # ------------------------------------------------------------------------------
-tox==3.5.3
+tox==3.6.0
 pytest==4.0.1
 pytest-cookies==0.3.0