diff --git a/CHANGELOG.md b/CHANGELOG.md
index 460d083..84eadb7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 <!--next-version-placeholder-->
 
+## v1.2.0 (2022-09-09)
+### Feature
+* Improve Marshaller performance ([#15](https://github.com/Bluetooth-Devices/dbus-fast/issues/15)) ([`a9e8866`](https://github.com/Bluetooth-Devices/dbus-fast/commit/a9e8866c2a6a97227ff5f001cae5e2196260379c))
+
 ## v1.1.9 (2022-09-09)
 ### Fix
 * Readme ([#13](https://github.com/Bluetooth-Devices/dbus-fast/issues/13)) ([`6bc87e0`](https://github.com/Bluetooth-Devices/dbus-fast/commit/6bc87e0f0717d4a4382e4bb36d064e22ff131751))
diff --git a/pyproject.toml b/pyproject.toml
index cb91e65..c2eae24 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "dbus-fast"
-version = "1.1.9"
+version = "1.2.0"
 description = "A faster version of dbus-next"
 authors = ["Bluetooth Devices Authors <bluetooth@koston.org>"]
 license = "MIT"
diff --git a/src/dbus_fast/__version__.py b/src/dbus_fast/__version__.py
index 6722cb4..ba6a46c 100644
--- a/src/dbus_fast/__version__.py
+++ b/src/dbus_fast/__version__.py
@@ -3,7 +3,7 @@ __description__ = (
     "A performant zero-dependency DBus library for Python with asyncio support"
 )
 __url__ = "https://github.com/bluetooth-devices/dbus-fast"
-__version__ = "1.1.9"
+__version__ = "1.2.0"
 __author__ = "Bluetooth Devices authors, Tony Crisci"
 __author_email__ = "bluetooth@koston.org"
 __license__ = "MIT"