diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1a8bde8..4c2cc5b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ flake8-bugbear==22.1.11
 flit==3.6.0
 mypy==0.931
 python-coveralls==2.9.3
-sphinx==4.3.2
+sphinx==6.1.3
 sphinx-mdinclude==0.4.0b1
 usort==1.0.1
 uvloop==0.14.0; python_version < "3.7" and sys_platform != "win32"  # pyup: ignore