diff --git a/pyproject.toml b/pyproject.toml
index f07f9e5..4a66228 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "quaternion"
-version = "2022.4.4"
+version = "2023.0.0"
 description = "Add a quaternion dtype to NumPy"
 readme = "README.md"
 license = "MIT"
diff --git a/setup.py b/setup.py
index c940df0..0c6353f 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 
 
 # Set this first for easier replacement
-version = "2022.4.4"
+version = "2023.0.0"
 
 if "win" in platform.lower() and not "darwin" in platform.lower():
     extra_compile_args = ["/O2"]
diff --git a/src/quaternion/__init__.py b/src/quaternion/__init__.py
index 8c5d5ea..6a60ded 100644
--- a/src/quaternion/__init__.py
+++ b/src/quaternion/__init__.py
@@ -3,7 +3,7 @@
 # Copyright (c) 2021, Michael Boyle
 # See LICENSE file for details: <https://github.com/moble/quaternion/blob/main/LICENSE>
 
-__version__ = "2022.4.4"
+__version__ = "2023.0.0"
 __doc_title__ = "Quaternion dtype for NumPy"
 __doc__ = "Adds a quaternion dtype to NumPy."
 __all__ = ['quaternion',