diff --git a/requirements_dev.txt b/requirements_dev.txt
index 03041fb..9f992e6 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,7 +4,7 @@ click==7.0
 # wheel==0.29.0
 watchdog==0.9.0
 flake8==3.6.0
-tox==3.5.3
+tox==3.6.0
 coverage==4.5.2
 coloredlogs==10.0
 wakeonlan==1.1.6