diff --git a/requirements.txt b/requirements.txt
index aabb7fa..7ef76f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ tox==2.3.1
 pytest-cookies==0.2.0
 
 # docs
-sphinx==1.4.5 
+sphinx==1.6.3 
 sphinx-autobuild==0.6.0
 recommonmark==0.4.0
 sphinx-rtd-theme==0.1.9