diff --git a/tox.ini b/tox.ini
index 8096a870b..e23e2fd89 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,7 +23,7 @@ deps =
     pytest-html==1.6
     hypothesis==1.11.1
     hypothesis-pytest==0.18.1
-    coverage==3.7.1
+    coverage==4.0.0
     pytest-cov==2.1.0
     beautifulsoup4==4.4.0