diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 88afe276159624dc14a7251601ef714b7f7edaf3..feca6fefab63a919e904ccf1dc13d5462ad10c6f 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,7 +2,7 @@
 
 ## Goals
 
-Part of the Duniter project running the Äž1 currency, Silkaj project is aiming to create a generic tool to manage his account and wallets, and to monitor the currency.
+Part of the Duniter project running the Äž1 currency, Silkaj project is aiming at creating a generic tool to manage the main account and wallets, to administrate and to monitor the currency.
 
 ## Install the development environment
 
@@ -52,11 +52,11 @@ 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)
 
-## Pre-commit
+## Pre-commit hooks
 
 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, `pyupgrade`, and `gitlab-ci` linting.
-We will use it for `pylint` code linting, `mypy` typing in the future.
+We are using it for `black` formatting, `mypy` static typing, `gitlab-ci` linting.
+We are also using `ruff` which replaces `isort` imports sorting, `pylint` code linting, `autoflake`, and `pyupgrade`
 
 Install `pre-commit` from your distribution. In case it is an outdated version, install it from `pip`:
 
@@ -73,10 +73,10 @@ To install the `git-hooks`, run:
 
 Then each time you commit changes, the hooks will perform checks.
 
-To manually run one of the tool above, run (eg for `isort`):
+To manually run one of the tool above, run (eg for `black`):
 
 ```bash
-> pre-commit run --all-files isort
+> pre-commit run --all-files black
 ```
 
 To run all checks on all files:
@@ -106,22 +106,12 @@ set -xg GITLAB_PRIVATE_TOKEN ""
 
 Check out duniterpy#169 for more details.
 
-### 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
-```
-
-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).
 
+Tests are stored into `unit` and `integration` folders depending on their types, then using the same tree as the source code.
+
 To run tests, within `silkaj` repository:
 
 ```bash
@@ -133,24 +123,24 @@ poetry run pytest
 Specifiy the path of the test:
 
 ```bash
-poetry run pytest tests/test_end_to_end.py
+poetry run pytest tests/unit/test_network.py
 ```
 
-## Version update
+## Version bump
 
 We are using the [Semantic Versioning](https://semver.org).
 
-To create a release, we use following script which will update the version in different files, and will make a commit and a tag out of it.
+To create a release, we use following script which will bump the version in different files, and will make a commit and a tag out of it.
 
 ```bash
-./release.sh 0.8.1
+./release.sh 0.20.0
 ```
 
 Then, a `git push --tags` is necessary to publish the tag. Git could be configured to publish tags with a simple `push`.
 
 ### How to release a pre-release on PyPI
 
-[Append `[{a|b|rc}N]` to the version, it will be automatically detected as pre-release by PyPI](https://pythonpackaging.info/07-Package-Release.html). i.e.: `v0.10.0rc0`.
+[Append `[{a|b|rc}N]` to the version, it will be automatically detected as pre-release by PyPI](https://pythonpackaging.info/07-Package-Release.html). i.e.: `v0.20.0rc0`.
 
 - install a pre-release from PyPI:
 
@@ -207,21 +197,23 @@ The `--extra-index-url` is used to retrieve dependencies packages from the offic
 ### Own built Docker images
 
 - https://git.duniter.org/docker/python3/poetry
-- Python images based on Debian Buster
+- Python images based on latest Debian
 - Poetry installed on top
-- Black installed on v3.8
 
 ### Jobs
 
 - Checks:
-  - Format
+  - pre-commit hooks
   - Build
 - Tests on supported Python versions:
   - Installation
   - Pytest on Python supported versions
-- PyPI distribution
-  - test
-  - stable
+- Package
+  - PyPI stable
+  - PyPI test
+  - Docker pip
+  - Docker poetry
+- Coverage website deployment on GitLab Pages
 
 ### Äž1 monetary license update