diff --git a/.git-blame-ignore-revs b/.git-blame-ignore-revs
index 4afe207..a828448 100644
--- a/.git-blame-ignore-revs
+++ b/.git-blame-ignore-revs
@@ -2,3 +2,5 @@
 872f39774a43db59ffc4bbddc77ad3a33ba7ead2
 # misc: apply black 22.1.0
 f014f154640dc30fd27662ec6d93ae6e64125ea3
+# misc: apply pyupgrade (#69708)
+a107b7ef0e847882dcd6d5fc8c39e8feccc5705e
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8125b5a..c4fd3dc 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,6 +1,11 @@
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
 repos:
+-   repo: https://github.com/asottile/pyupgrade
+    rev: v2.20.0
+    hooks:
+    - id: pyupgrade
+      args: ['--keep-percent-format', '--py37-plus']
 -   repo: https://github.com/psf/black
     rev: 22.3.0
     hooks:
diff --git a/README b/README
index 2410fcf..148cc12 100644
--- a/README
+++ b/README
@@ -184,7 +184,11 @@ isort is used to format the imports, using those parameters:
 
     isort --profile black --line-length 110
 
-There is .pre-commit-config.yaml to use pre-commit to automatically run black and isort
+pyupgrade is used to automatically upgrade syntax, using those parameters:
+
+    pyupgrade --keep-percent-format --py37-plus
+
+There is .pre-commit-config.yaml to use pre-commit to automatically run these tools
 before commits. (execute `pre-commit install` to install the git hook.)