diff --git a/.github/workflows/test_and_deploy.yml b/.github/workflows/test_and_deploy.yml
index 76fb0e9..08893b8 100644
--- a/.github/workflows/test_and_deploy.yml
+++ b/.github/workflows/test_and_deploy.yml
@@ -27,16 +27,16 @@ jobs:
     strategy:
       matrix:
         # Run all supported Python versions on linux
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.12"]
         os: [ubuntu-latest]
-        # Include one windows and macos run
+        # Include one windows two macos runs (intel and arm based)
         include:
         - os: macos-13 # Intel Mac
-          python-version: "3.10"
+          python-version: "3.12"
         - os: macos-latest # ARM Mac
-          python-version: "3.10"
+          python-version: "3.12"
         - os: windows-latest
-          python-version: "3.10"
+          python-version: "3.12"
 
     steps:
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/pyproject.toml b/pyproject.toml
index 5927e6f..9317c22 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "brainglobe-registration"
 authors = [{name = "Brainglobe Developers", email= "hello@brainglobe.info"}]
 description = "A napari plugin for registration to a  BrainGlobe atlas."
 readme = "README.md"
-requires-python = ">=3.9.0"
+requires-python = ">=3.10"
 dynamic = ["version"]
 
 license = {text = "BSD-3-Clause"}
@@ -14,9 +14,9 @@ classifiers = [
     "Intended Audience :: Science/Research",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Operating System :: OS Independent",
     "License :: OSI Approved :: BSD License",
     "Topic :: Scientific/Engineering :: Image Processing",
@@ -82,7 +82,7 @@ markers = [
 ]
 
 [tool.black]
-target-version = ['py39', 'py310', 'py311']
+target-version = ['py310','py311', 'py312']
 skip-string-normalization = false
 line-length = 79
 
@@ -108,14 +108,14 @@ fix = true
 [tool.tox]
 legacy_tox_ini = """
 [tox]
-envlist = py{39,310,311}
+envlist = py{310,311,312}
 isolated_build = True
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
     3.11: py311
+    3.12: py312
 
 [testenv]
 extras =