diff --git a/scripts/upgrade b/scripts/upgrade
index 5cf0cd7..1696e74 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -104,8 +104,8 @@ ynh_print_ON
 
 # Get public IP and set as external IP for coturn
 # note: '|| true' is used to ignore the errors if we can't get the public ipv4 or ipv6
-public_ip4="$(curl ip.yunohost.org)" || true
-public_ip6="$(curl ipv6.yunohost.org)" || true
+public_ip4="$(curl -s ip.yunohost.org)" || true
+public_ip6="$(curl -s ipv6.yunohost.org)" || true
 
 if ( [[ -n "$public_ip4" ]] && ynh_validate_ip4 --ip_address="$public_ip4" || [[ -n "$public_ip6" ]] && ynh_validate_ip6 --ip_address="$public_ip6" )
 then