diff --git a/requirements_dev.txt b/requirements_dev.txt
index 7ac9fb2..866c905 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -4,7 +4,7 @@ wheel==0.33.6
 watchdog==0.9.0
 flake8==3.7.8
 coverage==4.5.4
-Sphinx==2.2.0
+Sphinx==8.1.2
 tox==3.14.0
 twine==2.0.0