diff --git a/tox.ini b/tox.ini
index 1a70d18..53e026d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,21 +1,22 @@
 [tox]
 envlist =
   docs
-  py27-sphinx{179,185}
-  py{36,37}-sphinx{179,185,201,210}
+  py27-sphinx{17,18}
+  py{36,37}-sphinx{17,18,20,21,22}
 
 [testenv]
 deps =
   pytest
   pdbpp
   .
-  sphinx179: sphinx==1.7.9
-  sphinx185: sphinx==1.8.5
-  sphinx201: sphinx==2.0.1
-  sphinx210: sphinx==2.1.0
+  sphinx17: sphinx==1.7.9
+  sphinx18: sphinx==1.8.5
+  sphinx20: sphinx==2.0.1
+  sphinx21: sphinx==2.1.2
+  sphinx22: sphinx==2.2.0
 commands = pytest {posargs}
 
-[testenv:py37-sphinx210]
+[testenv:py37-sphinx21]
 deps =
   {[testenv]deps}
   pytest-cov