diff --git a/README.md b/README.md
index 4836bf6..a553684 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,12 @@ This package was developed to configure Uptime Kuma with Ansible. The Ansible co
 
 Python version 3.7+ is required.
 
-Supported Uptime Kuma versions: 1.17.0 - 1.21.2
+Supported Uptime Kuma versions:
+
+| uptime-kuma-api | Uptime Kuma     |
+|-----------------|-----------------|
+| 1.0.0           | 1.21.3          |
+| 0.1.0 - 0.13.0  | 1.17.0 - 1.21.2 |
 
 Installation
 ---
diff --git a/run_tests.sh b/run_tests.sh
index af7ff36..ff942c7 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -5,7 +5,7 @@ if [ $version ]
 then
   versions=("$version")
 else
-  versions=(1.21.2 1.21.1 1.20.2 1.19.6 1.18.5 1.17.1)
+  versions=(1.21.3)
 fi
 
 for version in ${versions[*]}
diff --git a/tests/test_maintenance.py b/tests/test_maintenance.py
index e5cf40e..cb443e3 100644
--- a/tests/test_maintenance.py
+++ b/tests/test_maintenance.py
@@ -30,7 +30,7 @@ class TestMaintenance(UptimeKumaTestCase):
 
         if parse_version(self.api.version) >= parse_version("1.21.2"):
             expected_maintenance.update({
-                "timezone": "Europe/Berlin"
+                "timezoneOption": "Europe/Berlin"
             })
 
         # add maintenance
@@ -242,7 +242,7 @@ class TestMaintenance(UptimeKumaTestCase):
             "daysOfMonth": [],
             "cron": "50 5 * * *",
             "durationMinutes": 120,
-            "timezone": "Europe/Berlin"
+            "timezoneOption": "Europe/Berlin"
         }
         self.do_test_maintenance_strategy(expected_maintenance)
 
diff --git a/uptime_kuma_api/api.py b/uptime_kuma_api/api.py
index cf86537..d8c0bf4 100644
--- a/uptime_kuma_api/api.py
+++ b/uptime_kuma_api/api.py
@@ -848,7 +848,7 @@ class UptimeKumaApi(object):
             timeRange: list = None,
             cron: str = "30 3 * * *",
             durationMinutes: int = 60,
-            timezone: str = None
+            timezoneOption: str = None
     ) -> dict:
         if not dateRange:
             dateRange = [
@@ -883,7 +883,7 @@ class UptimeKumaApi(object):
             data.update({
                 "cron": cron,
                 "durationMinutes": durationMinutes,
-                "timezone": timezone,
+                "timezoneOption": timezoneOption,
             })
         return data
 
@@ -2915,7 +2915,7 @@ class UptimeKumaApi(object):
                     ],
                     "cron": "",
                     "durationMinutes": null,
-                    "timezone": "Europe/Berlin",
+                    "timezoneOption": "Europe/Berlin",
                     "timezoneOffset": "+02:00",
                     "status": "ended"
                 }
@@ -2967,7 +2967,7 @@ class UptimeKumaApi(object):
                 "cron": null,
                 "duration": null,
                 "durationMinutes": 0,
-                "timezone": "Europe/Berlin",
+                "timezoneOption": "Europe/Berlin",
                 "timezoneOffset": "+02:00",
                 "status": "ended"
             }
@@ -3016,7 +3016,7 @@ class UptimeKumaApi(object):
             ...     ],
             ...     weekdays=[],
             ...     daysOfMonth=[],
-            ...     timezone="Europe/Berlin"
+            ...     timezoneOption="Europe/Berlin"
             ... )
             {
                 "msg": "Added Successfully.",
@@ -3049,7 +3049,7 @@ class UptimeKumaApi(object):
             ...     ],
             ...     weekdays=[],
             ...     daysOfMonth=[],
-            ...     timezone="Europe/Berlin"
+            ...     timezoneOption="Europe/Berlin"
             ... )
             {
                 "msg": "Added Successfully.",
@@ -3087,7 +3087,7 @@ class UptimeKumaApi(object):
             ...         0
             ...     ],
             ...     daysOfMonth=[],
-            ...     timezone="Europe/Berlin"
+            ...     timezoneOption="Europe/Berlin"
             ... )
             {
                 "msg": "Added Successfully.",
@@ -3126,7 +3126,7 @@ class UptimeKumaApi(object):
             ...         30,
             ...         "lastDay1"
             ...     ],
-            ...     timezone="Europe/Berlin"
+            ...     timezoneOption="Europe/Berlin"
             ... )
             {
                 "msg": "Added Successfully.",
@@ -3149,7 +3149,7 @@ class UptimeKumaApi(object):
             ...     daysOfMonth=[],
             ...     cron="50 5 * * *",
             ...     durationMinutes=120,
-            ...     timezone="Europe/Berlin"
+            ...     timezoneOption="Europe/Berlin"
             ... )
             {
                 "msg": "Added Successfully.",