diff --git a/tox.ini b/tox.ini
index 14e942f..fb4c849 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,8 +1,18 @@
 [tox]
-envlist = py37
+envlist = py37,tornado5,tornado6
 toxworkdir = build/tox
 skip_missing_interpreters = True
 
 [testenv]
 deps = -r requires/testing.txt
 commands = nosetests
+
+[testenv:tornado5]
+deps =
+	tornado>=5,<6
+	-r requires/testing.txt
+
+[testenv:tornado6]
+deps =
+	tornado>=6,<7
+	-r requires/testing.txt