diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 04923fcc..31efe55f 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -3,6 +3,13 @@ ci:
   skip: [hadolint-docker]
 
 repos:
+  # Autoupdate: Python code
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v2.24.0
+    hooks:
+      - id: pyupgrade
+        args: [--py39-plus]
+
   # Autoformat: Python code
   - repo: https://github.com/psf/black
     rev: 21.7b0
diff --git a/docs/conf.py b/docs/conf.py
index 17b16941..d6c75b04 100755
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 #
 # docker-stacks documentation build configuration file, created by
 # sphinx-quickstart on Fri Dec 29 20:32:10 2017.
diff --git a/tagging/create_manifests.py b/tagging/create_manifests.py
index e7c380e3..1eceba9d 100755
--- a/tagging/create_manifests.py
+++ b/tagging/create_manifests.py
@@ -5,7 +5,6 @@ import argparse
 import datetime
 import logging
 import os
-from typing import List
 from .docker_runner import DockerRunner
 from .get_taggers_and_manifests import get_taggers_and_manifests
 from .git_helper import GitHelper
@@ -23,7 +22,7 @@ def append_build_history_line(
     short_image_name: str,
     owner: str,
     wiki_path: str,
-    all_tags: List[str],
+    all_tags: list[str],
 ) -> None:
     logger.info("Appending build history line")
 
@@ -43,7 +42,7 @@ def append_build_history_line(
     build_history_line = "|".join([date_column, image_column, links_column]) + "|"
 
     home_wiki_file = os.path.join(wiki_path, "Home.md")
-    with open(home_wiki_file, "r") as f:
+    with open(home_wiki_file) as f:
         file = f.read()
     TABLE_BEGINNING = "|-|-|-|\n"
     file = file.replace(TABLE_BEGINNING, TABLE_BEGINNING + build_history_line + "\n")
@@ -55,7 +54,7 @@ def create_manifest_file(
     short_image_name: str,
     owner: str,
     wiki_path: str,
-    manifests: List[ManifestInterface],
+    manifests: list[ManifestInterface],
     container,
 ) -> None:
     manifest_names = [manifest.__name__ for manifest in manifests]
diff --git a/tagging/get_taggers_and_manifests.py b/tagging/get_taggers_and_manifests.py
index da8c201c..48fcc0b8 100644
--- a/tagging/get_taggers_and_manifests.py
+++ b/tagging/get_taggers_and_manifests.py
@@ -1,6 +1,5 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
-from typing import List, Tuple
 from .images_hierarchy import ALL_IMAGES
 from .manifests import ManifestInterface
 from .taggers import TaggerInterface
@@ -8,9 +7,9 @@ from .taggers import TaggerInterface
 
 def get_taggers_and_manifests(
     short_image_name: str,
-) -> Tuple[List[TaggerInterface], List[ManifestInterface]]:
-    taggers: List[TaggerInterface] = []
-    manifests: List[ManifestInterface] = []
+) -> tuple[list[TaggerInterface], list[ManifestInterface]]:
+    taggers: list[TaggerInterface] = []
+    manifests: list[ManifestInterface] = []
     while short_image_name is not None:
         image_description = ALL_IMAGES[short_image_name]
 
diff --git a/tagging/images_hierarchy.py b/tagging/images_hierarchy.py
index 5c7f696b..16dc4553 100644
--- a/tagging/images_hierarchy.py
+++ b/tagging/images_hierarchy.py
@@ -1,7 +1,7 @@
 # Copyright (c) Jupyter Development Team.
 # Distributed under the terms of the Modified BSD License.
 from dataclasses import dataclass, field
-from typing import Optional, List
+from typing import Optional
 from .taggers import (
     TaggerInterface,
     SHATagger,
@@ -31,8 +31,8 @@ from .manifests import (
 @dataclass
 class ImageDescription:
     parent_image: Optional[str]
-    taggers: List[TaggerInterface] = field(default_factory=list)
-    manifests: List[ManifestInterface] = field(default_factory=list)
+    taggers: list[TaggerInterface] = field(default_factory=list)
+    manifests: list[ManifestInterface] = field(default_factory=list)
 
 
 ALL_IMAGES = {