diff --git a/tox.ini b/tox.ini
index 2939a2b..3b8ffcf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,12 +1,13 @@
 [tox]
-envlist = lint,py37,py39,tornado5
+envlist = lint,py37,py38,py39,tornado5
 toxworkdir = ./build/tox
 
 [testenv]
 deps =
 	.[dev,tornado]
 commands =
-	python -m unittest
+	coverage run -m unittest
+	coverage report
 
 [testenv:lint]
 commands =