diff --git a/requirements_dev.txt b/requirements_dev.txt
index 5ae578d..d08fe2d 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -6,7 +6,7 @@ flake8==4.0.1
 tox==3.24.4
 coverage==6.2
 cryptography==35.0.0
-Sphinx==4.3.1
+Sphinx==4.5.0
 PyYAML==5.4.1
 pytest==6.2.5
 pytest-runner==5.3.1