diff --git a/scripts/backup b/scripts/backup
index a0878e7..f76a832 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -27,6 +27,8 @@ ynh_backup --src_path="$config_path"
 
 ynh_backup --src_path="$data_dir" --is_big
 
+ynh_backup --src_path="/var/lib/$app"
+
 #=================================================
 # SPECIFIC BACKUP
 #=================================================
diff --git a/scripts/install b/scripts/install
index 6b366ca..d078118 100755
--- a/scripts/install
+++ b/scripts/install
@@ -92,6 +92,7 @@ mkdir -p "/var/log/$app"
 chmod 750 "/var/log/$app"
 chmod -R o-rwx "/var/log/$app"
 chown -R $app:adm "/var/log/$app"
+chown -R $app:$app "/var/lib/$app"
 
 # Use logrotate to manage application logfile(s)
 ynh_use_logrotate
diff --git a/scripts/remove b/scripts/remove
index e1b6a31..789306d 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -42,6 +42,7 @@ ynh_secure_remove --file="$config_path"
 ynh_secure_remove --file="/var/log/$app"
 
 ynh_secure_remove --file="/run/$app"
+ynh_secure_remove --file="/var/lib/$app"
 ynh_secure_remove --file="/usr/bin/prosody"
 ynh_secure_remove --file="/usr/bin/prosodyctl"
 ynh_secure_remove --file="/usr/bin/prosody-migrator"
diff --git a/scripts/restore b/scripts/restore
index e8686f3..7e82900 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -51,8 +51,10 @@ chmod 750 "$config_path/certs"
 ynh_script_progression --message="Restoring the data directory..."
 
 ynh_restore_file --origin_path="$data_dir" --not_mandatory
+ynh_restore_file --origin_path="/var/lib/$app" --not_mandatory
 
 chown -R $app:$app "$data_dir"
+chown -R $app:$app "/var/lib/$app"
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index bf92e46..9c20251 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -112,6 +112,7 @@ mkdir -p "/var/log/$app"
 chmod 750 "/var/log/$app"
 chmod -R o-rwx "/var/log/$app"
 chown -R $app:adm "/var/log/$app"
+chown -R $app:$app "/var/lib/$app"
 
 # Use logrotate to manage app-specific logfile(s)
 ynh_use_logrotate --non-append