diff --git a/requirements.txt b/requirements.txt
index 659e861..f33c06b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ watchdog==0.8.3
 flake8==3.5.0
 tox==2.9.1
 coverage==4.4.2
-Sphinx==1.4.8
+Sphinx==1.6.5
 mock==2.0.0
 beautifulsoup4==4.3.2
 lxml==3.3.2