diff --git a/requirements_dev.txt b/requirements_dev.txt
index b675b56..8631235 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==0.10.2
 flake8==3.7.9
 tox==3.14.5
 coverage==5.0.3
-Sphinx==2.4.3
+Sphinx==5.3.0
 twine==3.1.1
 pytest==5.3.3
 pytest-runner==5.2