diff --git a/doc/requirements.txt b/doc/requirements.txt
index 0c9c95a8..93ddeccc 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -17,7 +17,7 @@ recommonmark==0.4.0
 singledispatch==3.4.0.3
 six==1.10.0
 snowballstemmer==1.2.1
-Sphinx==1.3.4
+Sphinx==1.3.6
 sphinx-autobuild==0.5.2
 sphinx-rtd-theme==0.1.9
 tornado==4.3