diff --git a/requirements_dev.txt b/requirements_dev.txt
index d56af8a..aeeed6e 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==0.8.3
 flake8==3.0.4
 tox==2.3.1
 coverage==4.2
-Sphinx==1.4.5
+Sphinx==8.1.3
 cryptography==1.5
 PyYAML==3.12
 pytest==3.0.2