diff --git a/requirements_dev.txt b/requirements_dev.txt
index cd267ae..c16c596 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==0.8.3
 flake8==3.2.1
 tox==2.5.0
 coverage==4.2
-Sphinx==1.4.8
+Sphinx==1.5
 cryptography==1.6
 PyYAML==3.12
 pytest==3.0.4