diff --git a/.lgtm.yml b/.lgtm.yml
new file mode 100644
index 000000000..8fd57e49e
--- /dev/null
+++ b/.lgtm.yml
@@ -0,0 +1,4 @@
+extraction:
+  python:
+    python_setup:
+      version: "3"
\ No newline at end of file
diff --git a/README.md b/README.md
index df3a4bb9f..969651eee 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@
 ![Version](https://img.shields.io/github/v/tag/yunohost/yunohost?label=version&sort=semver)
 [![Build status](https://shields.io/gitlab/pipeline/yunohost/yunohost/dev)](https://gitlab.com/yunohost/yunohost/-/pipelines)
 ![Test coverage](https://img.shields.io/gitlab/coverage/yunohost/yunohost/dev)
+[![Language grade: Python](https://img.shields.io/lgtm/grade/python/g/YunoHost/yunohost.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/YunoHost/yunohost/context:python)
 [![GitHub license](https://img.shields.io/github/license/YunoHost/yunohost)](https://github.com/YunoHost/yunohost/blob/dev/LICENSE)
 [![Mastodon Follow](https://img.shields.io/mastodon/follow/28084)](https://mastodon.social/@yunohost)