diff --git a/README.md b/README.md
index 5019aae3a9102a24fbe03070e142db18e3643eb2..077400c4700804a70a80155f62bbc9deae25cc3a 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ You can then start programming.
 - Use `make web-launch` to run the web interface in debug mode.
 - Use `make process-incoming` to process all reports located in the incoming directory.
 - Use `make test` to run all unit tests.
-- Use `make lint` to check your Python code with flake8 and pylint, and your Jinja templates with djlint.
+- Use `make lint` to check all Python code with ruff, pylint and mypy, and all Jinja templates with djlint.
 
 When you are done, do not forget to commit and push the code. Make sure all tests pass
 and linters do not show any problems before pushing the code.
@@ -86,3 +86,4 @@ These parameters can be set for the directory paths:
 
 These parameters can be for the event generation:
 - *apikey*: API key for access to SNER
+- *special_os*: list of special operating systems such as debian