diff --git a/CHANGELOG.md b/CHANGELOG.md
index c9849c58e..619b5cb77 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 ## Unreleased
 
+## 0.9.0 (2021-09-02)
+
+* Fix limit array in meterValue and sampledValue. Thanks [@laysauchoa](https://github.com/laysauchoa)
+* [#141](https://github.com/mobilityhouse/ocpp/issues/141) Add security enhancement for OCPP 1.6. Thanks [@villekr](https://github.com/villekr)
+* [#217](https://github.com/mobilityhouse/ocpp/issues/217) Fix parsing of floats in GetCompositeSchedule response. Thanks [@laysauchoa](https://github.com/laysauchoa)
+* [#223](https://github.com/mobilityhouse/ocpp/issues/223) Fix type DataTransferPayload.status. Thanks [@laysauchoa](https://github.com/laysauchoa)
+
 ## 0.8.3 (2021-04-21)
 
 * [#200](https://github.com/mobilityhouse/ocpp/issues/200) Add context to `asyncio.TimeoutError`s raised by `ocpp.ChargePoint.call()`.
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 5719e05f8..e57719e72 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -18,11 +18,11 @@
 # -- Project information -----------------------------------------------------
 
 project = 'OCPP'
-copyright = '2020, Auke Willem Oosterhoff'
+copyright = '2021, Auke Willem Oosterhoff'
 author = 'Auke Willem Oosterhoff'
 
 # The full version, including alpha/beta/rc tags
-release = '0.8.3'
+release = '0.9.0'
 
 
 # -- General configuration ---------------------------------------------------
diff --git a/pyproject.toml b/pyproject.toml
index 498ba0997..583936d9f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "ocpp"
-version = "0.8.3"
+version = "0.9.0"
 description = "Python package implementing the JSON version of the Open Charge Point Protocol (OCPP)."
 authors = [
 	"Andre Duarte <andre.duarte@mobilityhouse.com>",