diff --git a/tox.ini b/tox.ini
index f3203507..161d3d93 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 # Skip py37-pytest29 as such a combination does not work (#192)
-envlist=py{27,35,36}-pytest{29,30,31},py37-pytest{30,31}
+envlist=py{27,35,36}-pytest{29,30,31,4},py37-pytest{30,31,4},py38-pytest{31,4}
 
 [testenv]
 commands=
@@ -11,6 +11,7 @@ deps=
   pytest29: pytest~=2.9.0
   pytest30: pytest~=3.0.0
   pytest31: pytest~=3.1.0
+  pytest4: pytest~=4.6.9
 
 [testenv:py27-xdist]
 basepython=python2.7