diff --git a/requirements_dev.txt b/requirements_dev.txt
index 815930e..e3096ae 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==0.9.0
 flake8==3.7.7
 tox==3.11.1
 coverage==4.5.3
-Sphinx==2.0.1
+Sphinx==2.2.1
 pytest==4.5.0
 twine==1.13.0
 click==7.0