diff --git a/requirements_dev.txt b/requirements_dev.txt
index 4b899dd..bc7e0d2 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -3,7 +3,7 @@ wheel==0.34.2
 flake8==3.7.9
 tox==3.14.6
 coverage==5.0.4
-Sphinx==2.4.4
+Sphinx==3.0.1
 pytest==5.4.1
 twine==3.1.1
 click==7.1.1