diff --git a/README.install b/README.install
index dca083d..b824cff 100644
--- a/README.install
+++ b/README.install
@@ -103,6 +103,53 @@ EOF
 
 apt-get install jitsi-meet
 
+# ----------
+#
+# if installation fails with error:
+#
+#    Unable to load module 'roster_command': /usr/lib/prosody/modules/mod_roster_command.lua: No such file or directory
+#
+# then you have to adjust the debian package jitsi-meet-prosody
+
+# 1.) remove (purge) installed packages
+#
+apt purge jitsi-meet jitsi-meet-prosody jitsi-meet-turnserver
+
+
+# 2.) Only Download Packaes jitsi-meet and jitsi-meet-tokens
+#
+cd /tmp
+apt download jitsi-meet jitsi-meet-tokens
+
+
+# 3.) remove line 'Replaces: jitsi-meet-tokens' from DEBIAN/control
+#
+#    TIP: use midnight commander 'mc'
+#
+# remove line 'Replaces: jitsi-meet-tokens' from DEBIAN/control:
+#
+#     Package: jitsi-meet-prosody
+#     Source: jitsi-meet-web
+#     Version: 1.0.5211-1
+#     Architecture: all
+#     Maintainer: Jitsi Team <dev@jitsi.org>
+#     Installed-Size: 272
+#     Depends: openssl, prosody | prosody-trunk | prosody-0.11, lua-sec
+#   - Replaces: jitsi-meet-tokens
+#     Section: net
+#     Priority: extra
+#     Homepage: https://jitsi.org/meet
+#     Description: Prosody configuration for Jitsi Meet
+#
+# Now install as follows:
+#
+cd /tmp
+apt install ./jitsi-meet_2.0.6173-1_all.deb jitsi-meet-prosody_1.0.5211-1_all.deb
+
+#
+# ----------
+
+
 
 # !! Adjust nginx configuration !!