diff --git a/metrology/collectd_exec_xmpp.sh b/metrology/collectd_exec_xmpp.sh
index 511635f..37c8153 100755
--- a/metrology/collectd_exec_xmpp.sh
+++ b/metrology/collectd_exec_xmpp.sh
@@ -25,7 +25,8 @@ ejabberdctl_stats() {
     echo "PUTVAL \"${HOSTNAME}/xmpp_s2s_out/count\" interval=$INTERVAL $(date +%s):$(ejabberdctl outgoing_s2s_number)"
     echo "PUTVAL \"${HOSTNAME}/xmpp_muc_total/count\" interval=$INTERVAL $(date +%s):$(ejabberdctl muc_online_rooms muc.chapril.org | wc -l)"
 
-    echo "PUTVAL \"${HOSTNAME}/xmpp_accounts_created_lastday/count\" interval=$INTERVAL $(date +%s):$(count_accounts_created_lastday)"
+    echo "PUTVAL \"${HOSTNAME}/xmpp_accounts_created_lastday/count\" interval=$INTERVAL $(date +%s):$(_count_accounts_created_lastday)"
+    echo "PUTVAL \"${HOSTNAME}/xmpp_accounts_created_lasthour/count\" interval=$INTERVAL $(date +%s):$(_count_accounts_created_lasthour)"
     echo -n "PUTVAL \"${HOSTNAME}/xmpp_public_rooms_occupants/count\" interval=$INTERVAL $(date +%s):" ; _xmpp_public_rooms_total_occupants
 }
 
@@ -39,15 +40,23 @@ http_upload_disk_usage() {
 
 captcha_stats() {
     echo "PUTVAL \"${HOSTNAME}/xmpp_captcha_lastday/count\" interval=$INTERVAL $(date +%s):$(find /var/lib/ejabberd/chapril_captchas/ -mindepth 1 -maxdepth 1 -type f -mtime -1 | grep -v EXPERIMENTAL | wc -l)"
+    echo "PUTVAL \"${HOSTNAME}/xmpp_captcha_lasthour/count\" interval=$INTERVAL $(date +%s):$(find /var/lib/ejabberd/chapril_captchas/ -mindepth 1 -maxdepth 1 -type f -mmin -60 | grep -v EXPERIMENTAL | wc -l)"
 }
 
-count_accounts_created_lastday() {
+_count_accounts_created_lastday() {
     _sql_ejabberd "
     select count(*)
     from users
     where created_at > current_timestamp - interval '1 day'
 "
 }
+_count_accounts_created_lasthour() {
+    _sql_ejabberd "
+    select count(*)
+    from users
+    where created_at > current_timestamp - interval '1 hour'
+"
+}
 
 _xmpp_public_rooms_total_occupants() {
     # keep results in a cache file for 5 minutes