diff --git a/docs/requirements.txt b/docs/requirements.txt
index b7880231..d9ce8ad1 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,4 +1,4 @@
-sphinx>=3.0.0,<4
+sphinx>=5.3.0,<6
 sphinx_rtd_theme>=0.4,<1
 sphinx-argparse==0.2.5
 multidict<5.0,>=4.5
diff --git a/setup.py b/setup.py
index 30817ec4..1c39d3a1 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
     "flake8==3.8.1",
     "isort==4.3.21",
     "mypy==0.910",
-    "sphinx>=3.0.0,<4",
+    "sphinx>=5.3.0,<6",
     "sphinx_rtd_theme>=0.4,<1",
     "sphinx-argparse==0.2.5",
     "types-aiofiles",