diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index d8ddeec5f5ebbd813902e7155fbbc02857e94757..c5e9f44472217281b6bc6b1b12a1cef614777149 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -44,19 +44,31 @@ Please read their documentations on how to use them the best possible.
 - [Pendulum](https://pendulum.eustace.io/docs/)
 - [texttable](https://github.com/foutaise/texttable/#documentation)
 
-## Formatting
-We are using [Black](https://github.com/python/black) formatter tool.
-To have Black installed in your Poetry virtualenv, you will need Python v3.6 or greater.
+## 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.
+Depending whether you prefer to work ouside or inside Poetry virtual environment, you should stick to one usage or use both to still have this usefull checks.
+`pre-commit` can be used from the installation on your system or from inside Poetry virtual environment where it is installed.
+
+To install the `git-hooks`, run:
+```bash
+sudo apt install pre-commit
+silkaj> pre-commit install
+```
+
+```bash
+silkaj> poetry shell
+(silkaj-58dUTebQ-py3.9) pre-commit install
+```
+
+### Black formatting
+We are using [Black](https://github.com/psf/black) formatter tool.
 Run Black on a Python file to format it:
 ```bash
 poetry run black silkaj/cli.py
 ```
-
-### Pre-commit
-Then, you can use the `pre-commit` tool to check staged changes before committing.
-To do so, you need to run `pre-commit install` to install the git hook.
-Black is called on staged files, so commit should fail in case black made changes.
-You will have to add Black changes in order to commit your changes.
+With `pre-commit`, Black is called on staged files, so the commit should fail in case black would make changes.
+You will have to `git add` Black changes in order to commit your changes.
 
 ## Tests
 We are using [Pytest](https://pytest.org) as a tests framework. To know more about how Silkaj implement it read the [project test documentation](doc/test_and_coverage.md).