diff --git a/tox.ini b/tox.ini
index c369757a..ce08dbb2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,8 +29,7 @@ commands =
 
 [testenv:docs]
 deps =
-    # we're getting an error on travis with Sphinx 1.8.0, so we use a lower version
-    sphinx # < 1.8.0
+    sphinx
     sphinx-rtd-theme
 changedir = docs
 commands = sphinx-build -b html -d build/doctrees source build/html