diff --git a/application/config/google_calendar.php b/application/config/google_calendar.php
index fe8329b..842bbcb 100644
--- a/application/config/google_calendar.php
+++ b/application/config/google_calendar.php
@@ -3,3 +3,4 @@ defined('BASEPATH') OR exit('No direct script access allowed');
 
 $config['gcal_service_account_path'] = APPPATH . 'config/service-account-key.json';
 $config['gcal_evelin_calendar_id']   = 'katozoltan0804@gmail.com'; // Evelin's Calendar ID (e.g. her Gmail address)
+$config['ntfy_topic']                = ''; // ntfy.sh topic for push notifications (e.g. 'studiobeve-bookings-x7k2')
diff --git a/application/controllers/Pages.php b/application/controllers/Pages.php
index a7a02ce..b471d3c 100755
--- a/application/controllers/Pages.php
+++ b/application/controllers/Pages.php
@@ -460,6 +460,15 @@ class Pages extends CI_Controller {
 				$this->Service_model->updateBookingCalEvents($newBooking->booking_id, $workerEventId, $ownerEventId);
 			}
 
+			// ntfy push notification
+			$gcalServiceNamesNtfy = implode(', ', array_map(function($s){ return $s->service_name_no; }, $serviceArray));
+			$this->_ntfy(
+				'New booking: ' . $bookingArray['guest_name'],
+				'Worker: '   . $worker->worker_name . "\n" .
+				'Date: '     . $bookingArray['booking_date'] . ' ' . $bookingArray['booking_start_time'] . ' - ' . $bookingArray['booking_finish_time'] . "\n" .
+				'Services: ' . $gcalServiceNamesNtfy
+			);
+
 			$content = '';
 			
 			switch($_POST['lang']){
@@ -880,6 +889,14 @@ class Pages extends CI_Controller {
 		}
 		$this->Service_model->updateBookingCalEvents($booking->booking_id, $newWorkerEventId, $newOwnerEventId);
 
+		// ntfy push notification
+		$this->_ntfy(
+			'Modified booking: ' . $booking->guest_name,
+			'Worker: '   . $worker->worker_name . "\n" .
+			'Date: '     . $newBookingDate . ' ' . $newStartTime . ' - ' . $finishTime . "\n" .
+			'Services: ' . $gcalServiceNames
+		);
+
 		$manageLink = SITEURL.$lang.'/manage-booking/'.$token;
 		$totalServicePrice = 0;
 		foreach($serviceArray as $s){ $totalServicePrice += $s->service_price; }
@@ -1000,6 +1017,13 @@ class Pages extends CI_Controller {
 			$this->googlecalendar->deleteEvent($evelinCalId, $booking->gcal_event_id_owner);
 		}
 
+		// ntfy push notification
+		$this->_ntfy(
+			'Cancelled booking: ' . $booking->guest_name,
+			'Worker: ' . $worker->worker_name . "\n" .
+			'Date: '   . $booking->booking_date . ' ' . $booking->booking_start_time
+		);
+
 		$this->Service_model->deleteBooking($booking->booking_id);
 
 		$data['selectedLang'] = $lang;
@@ -1009,5 +1033,20 @@ class Pages extends CI_Controller {
 		$this->load->view('pages/manage-booking-cancelled', $data);
 	}
 
+	private function _ntfy($title, $message){
+		$this->config->load('google_calendar');
+		$topic = $this->config->item('ntfy_topic');
+		if(empty($topic)) return;
+		$ch = curl_init('https://ntfy.sh/' . $topic);
+		curl_setopt_array($ch, [
+			CURLOPT_POST           => true,
+			CURLOPT_POSTFIELDS     => $message,
+			CURLOPT_HTTPHEADER     => ['Title: ' . $title, 'Priority: high', 'Tags: calendar'],
+			CURLOPT_RETURNTRANSFER => true,
+			CURLOPT_TIMEOUT        => 5,
+		]);
+		curl_exec($ch);
+		curl_close($ch);
+	}
 
 }