diff --git a/tox.ini b/tox.ini
index 593056a..4b13dd8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -2,8 +2,8 @@
 envlist =
     py{27,35,36}-sphinx{16,17,18},
     # Workaround https://github.com/tox-dev/tox/issues/706
-    lint-sphinx16
-    docs-sphinx16
+    lint-sphinx18
+    docs-sphinx18
 
 [tox:travis]
 2.7 = py27-sphinx{16,17,18}, docs-sphinx16, lint-sphinx16