diff --git a/labeu/docker-compose.yml b/labeu/docker-compose.yml
index c4559d6..e6b9b2c 100644
--- a/labeu/docker-compose.yml
+++ b/labeu/docker-compose.yml
@@ -23,6 +23,8 @@ services:
     
   peertube_labeu:
     # image: chocobozzz/peertube:v4.3.1-bullseye
+    # for upgrade from v4 : Generate in .env using `openssl rand -hex 32`
+    # PEERTUBE_SECRET=<MY PEERTUBE SECRET>
     image: chocobozzz/peertube:v5.2.0-bullseye
     networks:
       - frontend_labeu