diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b17bbc9fb70d127f55e6fa4afd44b18936dfbb3f..5eeb4c6050ac5dc52743886b4bdb071bb3548d60 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -46,7 +46,8 @@ Please read their documentations on how to use them the best possible.
 
 ## Pre-commit
 We are using [`pre-commit`](https://pre-commit.com/) tool to perform checks on staged changes before committing.
-We are using it for `black` formatting, `isort` imports sorting, and `gitlab-ci` linting. We will use it for `pylint` code linting, `mypy` typing in the future.
+We are using it for `black` formatting, `isort` imports sorting, `pyupgrade`, and `gitlab-ci` linting.
+We will use it for `pylint` code linting, `mypy` typing in the future.
 
 Install `pre-commit` from your distribution. In case it is an outdated version, install it from `pip`:
 ```bash