diff --git a/roles/calibre/tasks/install.yml b/roles/calibre/tasks/install.yml
index ad72beade..ca2eddf39 100644
--- a/roles/calibre/tasks/install.yml
+++ b/roles/calibre/tasks/install.yml
@@ -1,4 +1,4 @@
-# 1. INSTALL CALIBRE 4.X+ (calibre, calibredb, calibre-server etc) ON ALL OS'S
+# 1. INSTALL CALIBRE 3.39.1+ or 4.12+ (calibre, calibredb, calibre-server etc) ON ALL OS'S
 
 - name: "Install OS's latest packages: calibre, calibre-bin"
   package:
@@ -18,7 +18,7 @@
 
 # 2020-04-29: Can work *IF* you do 'apt install python2' and change top line
 # of /opt/iiab/downloads/calibre-installer.py from '#!/usr/bin/env python2'
-# to '#!/usr/bin/python2'
+# to '#!/usr/bin/python2' e.g. to upgrade Calibre 4.12 on Ubuntu 20.04 LTS.
 #
 #- name: Install Calibre via py-installer.yml -> calibre-installer.py (if not Raspbian)
 #  include_tasks: py-installer.yml