diff --git a/docs/installation.rst b/docs/installation.rst
index 37455123..6e1bfb44 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -33,13 +33,9 @@ of the following keys:
 Bootstrapping
 =============
 
-This package can build itself with only the ``toml`` and ``pep517``
-dependencies. The ``--skip-dependency-check`` flag should be used in this
-case.
-
-On Python 3.10 and older, we have a dependency on tomli_, but toml_ can be
-used instead, which may make bootstrapping easier.
-
+This package can build itself only with the ``tomli`` (can be omitted in Python 3.11+)
+and ``pyproject-hooks`` dependencies.
+The ``--skip-dependency-check`` flag should be used in this case.
 
 Compatibility
 =============
diff --git a/pyproject.toml b/pyproject.toml
index 85929761..5c28a06e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -42,7 +42,7 @@ dependencies = [
 [project.optional-dependencies]
 docs = [
   "furo >= 2021.08.31",
-  "sphinx ~= 4.0",
+  "sphinx ~= 6.0",
   "sphinx-argparse-cli >= 1.5",
   "sphinx-autodoc-typehints >= 1.10",
 ]