diff --git a/setup.py b/setup.py
index e2dc71e7d..87062acff 100755
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ testing_extras = [
 documentation_extras = [
     'pyenchant==1.6.6',
     'sphinxcontrib-spelling>=2.3.0',
-    'Sphinx>=1.3.1',
+    'Sphinx>=1.3.1<2.0',
     'sphinx-autobuild>=0.5.2',
     'sphinx_rtd_theme>=0.1.8',
 ]