diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 0cd58892cd8532df55b279c2fe99e5ee3ecfacd3..30d8475bcd42401dbd2647619518d2ee6dd24ee9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -13,6 +13,7 @@ Then, once it is necessary, commit with::
 
 Do not forget to write a helpful commit message.
 
+
 Check your patch
 ----------------
 
@@ -25,6 +26,7 @@ You can run these scripts to be sure your patch doesn't break anything::
 Perhaps you should also write or fix tests. These tests are automatically run by
 `Gitlab CI <https://git.weboob.org/weboob/devel/pipelines>`_ at each commit and merge requests.
 
+
 Create a merge request or send a patch
 --------------------------------------
 
@@ -43,3 +45,20 @@ Then, send them with this command::
     $ git send-email --to=weboob@weboob.org *.patch
 
 You can also send the files by yourself if you haven't any configured MTA on your system.
+
+
+Notes on merging a merge request
+--------------------------------
+
+Few people (members of the [Weboob group on this
+repo](https://git.weboob.org/groups/weboob/group_members)) have the right to
+merge a MR.
+
+Anyone is welcome to review and comment pending merge requests. A merge
+request should in principle have at least two reviewers before getting merged.
+
+Weboob `devel` repo should keep an history as linear as possible. Then,
+merging a merge request should be done locally, with prior rebasing upon the
+`master` branch and take care of using the `-ff-only` merge option. Merge
+requests should **NOT** be merged through the Gitlab UI, which would result in
+an extra "merge" commit.