diff --git a/.github/workflows/test_and_deploy.yml b/.github/workflows/test_and_deploy.yml
index 561a70f..7ecd8a9 100644
--- a/.github/workflows/test_and_deploy.yml
+++ b/.github/workflows/test_and_deploy.yml
@@ -38,16 +38,16 @@ jobs:
     strategy:
       matrix:
         # Run all supported Python versions on linux
-        python-version: ["3.9", "3.10"]
+        python-version: ["3.10", "3.11", "3.12"]
         os: [ubuntu-latest]
         # Include one windows and macos run
         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:
       # Run tests
diff --git a/pyproject.toml b/pyproject.toml
index 16e0b14..1d5fda1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "brainglobe"
 authors = [{ name = "BrainGlobe Developers", email = "hello@brainglobe.info" }]
 description = "Python-based tools for computational neuroanatomy."
 readme = "README.md"
-requires-python = ">=3.9.0"
+requires-python = ">=3.10.0"
 dynamic = ["version"]
 
 license = { text = "BSD-3-Clause" }
@@ -12,23 +12,24 @@ classifiers = [
   "Development Status :: 2 - Pre-Alpha",
   "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",
 ]
 
 dependencies = [
   "brainglobe-atlasapi>=2.0.6,<3",
-  "brainglobe-heatmap>=0.5.2,<1",
+  "brainglobe-heatmap>=0.5.3,<1",
   "brainglobe-napari-io>=0.3.4,<1",
-  "brainglobe-segmentation>=1.2.3,<2",
+  "brainglobe-segmentation>=1.2.4,<2",
   "brainglobe-space>=1.0.2,<2",
   "brainglobe-utils>=0.5.0,<1",
   "brainreg[napari]>=1.0.9,<2",
   "brainrender-napari>=0.0.3,<1",
   "brainrender>=2.1.9,<3",
-  "cellfinder[napari]>=1.2.0,<2",
+  "cellfinder[napari]>=1.3.0,<2",
   "napari[all]",
   # brainglobe-napari [WIP],
 ]
@@ -69,7 +70,7 @@ exclude = ["tests*"]
 addopts = "--cov=brainglobe"
 
 [tool.black]
-target-version = ['py39', 'py310']
+target-version = ['py310', 'py311', 'py312']
 skip-string-normalization = false
 line-length = 79
 
@@ -93,13 +94,14 @@ fix = true
 [tool.tox]
 legacy_tox_ini = """
 [tox]
-envlist = py{39,310}
+envlist = py{39,310,311}
 isolated_build = True
 
 [gh-actions]
 python =
-    3.9: py39
     3.10: py310
+    3.11: py311
+    3.12: py312
 
 [testenv]
 extras =