diff --git a/requirements_dev.txt b/requirements_dev.txt
index dfccd90..9b7a72c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,5 +5,5 @@ watchdog==2.1.3
 flake8==3.9.2
 tox==3.23.1
 coverage==5.5
-Sphinx==4.0.3
+Sphinx==6.0.0
 twine==3.4.1