diff --git a/tests/test_monitor.py b/tests/test_monitor.py
index acdc4d6..aee7d98 100644
--- a/tests/test_monitor.py
+++ b/tests/test_monitor.py
@@ -41,7 +41,7 @@ class TestMonitor(UptimeKumaTestCase):
         self.compare(monitor, expected_monitor)
 
         # edit monitor
-        expected_monitor["type"] = "ping"
+        expected_monitor["type"] = MonitorType.PING
         expected_monitor["name"] = "monitor 1 new"
         expected_monitor["hostname"] = "127.0.0.10"
         del expected_monitor["url"]
diff --git a/tests/test_notification.py b/tests/test_notification.py
index 60809f7..b411f82 100644
--- a/tests/test_notification.py
+++ b/tests/test_notification.py
@@ -1,6 +1,6 @@
 import unittest
 
-from uptime_kuma_api import UptimeKumaException
+from uptime_kuma_api import UptimeKumaException, NotificationType
 from uptime_kuma_test_case import UptimeKumaTestCase
 
 
@@ -10,7 +10,7 @@ class TestNotification(UptimeKumaTestCase):
             "name": "notification 1",
             "isDefault": True,
             "applyExisting": True,
-            "type": "PushByTechulus",
+            "type": NotificationType.PUSHBYTECHULUS,
             "pushAPIKey": "123456789"
         }
 
@@ -37,7 +37,7 @@ class TestNotification(UptimeKumaTestCase):
         expected_notification["name"] = "notification 1 new"
         expected_notification["default"] = False
         expected_notification["applyExisting"] = False
-        expected_notification["type"] = "PushDeer"
+        expected_notification["type"] = NotificationType.PUSHDEER
         expected_notification["pushdeerKey"] = "987654321"
         del expected_notification["pushAPIKey"]
         r = self.api.edit_notification(notification_id, **expected_notification)
diff --git a/tests/test_proxy.py b/tests/test_proxy.py
index f0c6982..fce36b1 100644
--- a/tests/test_proxy.py
+++ b/tests/test_proxy.py
@@ -33,7 +33,7 @@ class TestProxy(UptimeKumaTestCase):
         self.compare(proxy, expected_proxy)
 
         # edit proxy
-        expected_proxy["protocol"] = "https"
+        expected_proxy["protocol"] = ProxyProtocol.HTTPS
         expected_proxy["host"] = "127.0.0.2"
         expected_proxy["port"] = 8888
         r = self.api.edit_proxy(proxy_id, **expected_proxy)