diff --git a/rolling_update.yml b/rolling_update.yml
index 4b2c31aa6..741ca091e 100644
--- a/rolling_update.yml
+++ b/rolling_update.yml
@@ -9,6 +9,10 @@
 
 # /!\ DO NOT FORGET TO CHANGE THE RELEASE VERSION FIRST! /!\
 
+- hosts: all
+  tasks:
+    - debug: msg="gather facts on all hosts for following reference"
+
 - hosts: mons
   serial: 1
   sudo: True