diff --git a/scripts/install b/scripts/install
index 1b8e117..4e0fdbf 100644
--- a/scripts/install
+++ b/scripts/install
@@ -111,7 +111,7 @@ ynh_script_progression --message="Configuring a systemd service..." --weight=1
 # Create a dedicated systemd config
 ynh_add_systemd_config
 
-yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "$port_dns_over_http" "$port_dns_over_quic"
+yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "53" "$port_dns_over_http" "$port_dns_over_quic"
 
 #=================================================
 # START SYSTEMD SERVICE
diff --git a/scripts/restore b/scripts/restore
index b29b641..8a43917 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -80,7 +80,7 @@ ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
 systemctl enable "$app.service" --quiet
 
-yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "$port_dns_over_http" "$port_dns_over_quic"
+yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "53" "$port_dns_over_http" "$port_dns_over_quic"
 
 #=================================================
 # START SYSTEMD SERVICE
diff --git a/scripts/upgrade b/scripts/upgrade
index 0400827..b2c8053 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -111,7 +111,7 @@ ynh_add_nginx_config
 # Create a dedicated systemd config
 ynh_add_systemd_config
 
-yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "$port_dns_over_http" "$port_dns_over_quic"
+yunohost service add "$app" --description="Ads & trackers blocking DNS server" --needs_exposed_ports "53" "$port_dns_over_http" "$port_dns_over_quic"
 
 #=================================================
 # SPECIFIC UPGRADE