diff --git a/README.md b/README.md
index 0b220b2c91c26082d8b8be4a1af985a5158a7df0..b58512cd414cf43b015904ddba6198a069e0f2d5 100644
--- a/README.md
+++ b/README.md
@@ -52,6 +52,16 @@ docker-compose down
 You **MUST** set at least the `ANNOTOT_SECRET_KEY_BASE` to a random string, the rest is preconfigured for a local development environment.
 The `$HTTP_FOLDER` (`./www` by default) directory will be accessible via HTTP at `http://localhost:$PORT/data` and can be used to store manifests and theirs ressources and see them in Mirador.
 
+### Change version of Mirador or Mirador Annotation plugin
+
+Edit `package.json`.
+Search dependencies 'Mirador' or 'mirador-annotations' and replace with desired git branch.
+Then stop, build and up again (see previous).
+
+Notes :
+- `annotation-on-video` is the most advanced branch for `mirador`
+- `tetras-main` is the most advanced branch for `mirador-annotation` 
+
 ### Production
 
 For production, one **also** need to setup :