diff --git a/tox.ini b/tox.ini
index f43f534..fdbd12b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,11 +1,11 @@
 [tox]
-envlist = py34, py35, py36
+envlist = py35, py36, py37, py38
 
 [testenv]
 deps =
-    pytest==2.9.1
-    pytest-cov==2.2.1
-    pytest-pep8==1.0.6
+    pytest==5.4.*
+    pytest-cov==2.5.*
+    pytest-pep8==1.0.*
 commands =
     py.test tests/pkgschema/tests.py \
         --cov={envsitepackagesdir}/pkgschema \