diff --git a/requirements/development.txt b/requirements/development.txt
index afd5b0d..803c415 100644
--- a/requirements/development.txt
+++ b/requirements/development.txt
@@ -17,4 +17,4 @@ coveralls==1.1
 mock==2.0.0
 
 # docs
-Sphinx==1.6.3
+Sphinx==1.6.4