diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 34f1ae2..f1a6ae4 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,7 +11,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: '3.11'
           cache: 'pip'
           cache-dependency-path: 'requirements/*.txt'
       - name: Install dev dependencies
@@ -22,7 +22,7 @@ jobs:
   test:
     strategy:
       matrix:
-        python: ['3.7', '3.8', '3.9', '3.10']
+        python: ['3.7', '3.8', '3.9', '3.10', '3.11']
         os: [ubuntu-latest, windows-latest, macos-latest]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/.github/workflows/pypi-release.yml b/.github/workflows/pypi-release.yml
index b996d3e..56bbf66 100644
--- a/.github/workflows/pypi-release.yml
+++ b/.github/workflows/pypi-release.yml
@@ -36,7 +36,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.10"
+          python-version: "3.11"
           cache: 'pip'
       - name: Install build dependencies
         run: pip install -U setuptools wheel build
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e63cdf7..c025b6b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.9.0] — 2023-01-04
+### Added
+- Added typings to the codebase. ([#207])
+- Added Python3.11 support. ([#209])
+
 ## [1.8.0] — 2022-12-08
 ### Changed
 - Dropped support of Python 3.6 that has reached EOL almost a year ago.
@@ -174,6 +179,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 - Initial release
 
+[1.9.0]: https://github.com/cloudevents/sdk-python/compare/1.8.0...1.9.0
 [1.8.0]: https://github.com/cloudevents/sdk-python/compare/1.7.0...1.8.0
 [1.7.1]: https://github.com/cloudevents/sdk-python/compare/1.7.0...1.7.1
 [1.7.0]: https://github.com/cloudevents/sdk-python/compare/1.6.0...1.7.0
@@ -247,4 +253,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#197]: https://github.com/cloudevents/sdk-python/pull/197
 [#202]: https://github.com/cloudevents/sdk-python/pull/202
 [#204]: https://github.com/cloudevents/sdk-python/pull/204
+[#207]: https://github.com/cloudevents/sdk-python/pull/207
 [#208]: https://github.com/cloudevents/sdk-python/pull/208
+[#209]: https://github.com/cloudevents/sdk-python/pull/209
diff --git a/cloudevents/__init__.py b/cloudevents/__init__.py
index cc81e92..3b98aa8 100644
--- a/cloudevents/__init__.py
+++ b/cloudevents/__init__.py
@@ -12,4 +12,4 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-__version__ = "1.8.0"
+__version__ = "1.9.0"
diff --git a/setup.py b/setup.py
index 9738d04..97cf57e 100644
--- a/setup.py
+++ b/setup.py
@@ -69,6 +69,7 @@ def get_version(rel_path):
             "Programming Language :: Python :: 3.8",
             "Programming Language :: Python :: 3.9",
             "Programming Language :: Python :: 3.10",
+            "Programming Language :: Python :: 3.11",
             "Typing :: Typed",
         ],
         keywords="CloudEvents Eventing Serverless",
diff --git a/tox.ini b/tox.ini
index ba83324..a5cbdfa 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py{37,38,39,310},lint
+envlist = py{37,38,39,310,311},lint
 skipsdist = True
 
 [testenv]
@@ -12,7 +12,7 @@ setenv =
 commands = pytest {env:PYTESTARGS} {posargs}
 
 [testenv:reformat]
-basepython = python3.10
+basepython = python3.11
 deps =
     black
     isort
@@ -21,7 +21,7 @@ commands =
     isort cloudevents samples
 
 [testenv:lint]
-basepython = python3.10
+basepython = python3.11
 deps =
     black
     isort