diff --git a/docs/credits.rst b/docs/credits.rst
index 83ee5bf7..e34fee17 100644
--- a/docs/credits.rst
+++ b/docs/credits.rst
@@ -93,6 +93,10 @@ The following people have contributed to the development of PHP Server Monitor:
 
   * Discord webhook support
 
+* Łukasz Szczepański - https://github.com/NixNotCastey
+
+  * PromoSMS gateway
+
 Translators
 +++++++++++
 
diff --git a/src/includes/functions.inc.php b/src/includes/functions.inc.php
index 59717599..6a70408f 100644
--- a/src/includes/functions.inc.php
+++ b/src/includes/functions.inc.php
@@ -799,6 +799,9 @@ namespace {
             case 'smsapi':
                 $sms = new \psm\Txtmsg\SMSAPI();
                 break;
+            case 'promosms':
+                $sms = new \psm\Txtmsg\PromoSMS();
+                break;
         }
 
         // copy login information from the config file