diff --git a/CHANGELOG.md b/CHANGELOG.md
index 763c65c..8415462 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,39 @@
 ## Changelog
 
+### Release 1.0.0
+
+#### Features
+- add `ssl_verify` parameter
+- add `wait_events` parameter
+- implement context manager for UptimeKumaApi class
+- drop Python 3.6 support
+- implement `get_monitor_status` helper method
+- implement timeouts for all methods (`timeout` parameter)
+- add support for uptime kuma 1.21.3
+- drop support for Uptime Kuma versions < 1.21.3
+- check for required notification arguments
+- raise exception when deleting an element that does not exist
+- replace raw return values with enum values
+
+#### Bugfixes
+- adjust monitor `status` type to allow all used values
+- fix memory leak
+
+#### BREAKING CHANGES
+- Python 3.7+ required
+- maintenance parameter `timezone` renamed to `timezoneOption`
+- Removed the `wait_timeout` parameter. Use the new `timeout` parameter instead. The `timeout` parameter specifies how many seconds the client should wait for the connection, an expected event or a server response.
+- changed return values of methods `get_heartbeats`, `get_important_heartbeats`, `avg_ping`, `uptime`, `get_heartbeat`, `cert_info`
+- Uptime Kuma versions < 1.21.3 are not supported in uptime-kuma-api 1.0.0+
+- Removed the `get_heartbeat` method. This method was never intended to retrieve information. Use `get_heartbeats` or `get_important_heartbeats` instead.
+- Types of return values changed to enum values:
+  - monitor: `type` (str -> MonitorType), `status` (bool -> MonitorStatus), `authMethod` (str -> AuthMethod)
+  - notification: `type` (str -> NotificationType)
+  - docker host: `dockerType` (str -> DockerType)
+  - status page: `style` (str -> IncidentStyle)
+  - maintenance: `strategy` (str -> MaintenanceStrategy)
+  - proxy: `protocol` (str -> ProxyProtocol)
+
 ### Release 0.13.0
 
 #### Feature
diff --git a/README.md b/README.md
index a553684..39ba801 100644
--- a/README.md
+++ b/README.md
@@ -10,10 +10,10 @@ Python version 3.7+ is required.
 
 Supported Uptime Kuma versions:
 
-| uptime-kuma-api | Uptime Kuma     |
+| Uptime Kuma     | uptime-kuma-api |
 |-----------------|-----------------|
-| 1.0.0           | 1.21.3          |
-| 0.1.0 - 0.13.0  | 1.17.0 - 1.21.2 |
+| 1.21.3          | 1.0.0           |
+| 1.17.0 - 1.21.2 | 0.1.0 - 0.13.0  |
 
 Installation
 ---
diff --git a/setup.py b/setup.py
index 5a0d95a..b2828a3 100644
--- a/setup.py
+++ b/setup.py
@@ -35,7 +35,7 @@ setup(
         "packaging"
     ],
     classifiers=[
-        "Development Status :: 1 - Planning",
+        "Development Status :: 5 - Production/Stable",
         "Environment :: Web Environment",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: MIT License",
diff --git a/uptime_kuma_api/__version__.py b/uptime_kuma_api/__version__.py
index 7148fcc..142ed7d 100644
--- a/uptime_kuma_api/__version__.py
+++ b/uptime_kuma_api/__version__.py
@@ -1,5 +1,5 @@
 __title__ = "uptime_kuma_api"
-__version__ = "0.13.0"
+__version__ = "1.0.0"
 __author__ = "Lucas Held"
 __license__ = "MIT"
 __copyright__ = "Copyright 2023 Lucas Held"