diff --git a/requirements_dev.txt b/requirements_dev.txt
index 3f18e01..0a4359c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -5,7 +5,7 @@ watchdog==2.0.2
 flake8==3.9.0
 tox==3.23.0
 coverage==5.5
-Sphinx==3.5.3
+Sphinx==8.1.2
 twine==3.4.1
 
 pytest==6.2.2