diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9d2476ec..06d324f8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-20.04, windows-latest, macos-latest]
-        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/action.yml b/action.yml
index cfac6c90..6b230160 100644
--- a/action.yml
+++ b/action.yml
@@ -4,7 +4,7 @@ inputs:
   python-versions:
     description: "comma-separated list of python versions to install"
     required: false
-    default: "3.7, 3.8, 3.9, 3.10, 3.11, pypy-3.7, pypy-3.8, pypy-3.9"
+    default: "3.7, 3.8, 3.9, 3.10, 3.11, 3.12, pypy-3.7, pypy-3.8, pypy-3.9"
 branding:
   icon: package
   color: blue
@@ -15,7 +15,7 @@ runs:
     - uses: actions/setup-python@v4
       id: localpython
       with:
-        python-version: "3.7 - 3.11"
+        python-version: "3.7 - 3.12"
         update-environment: false
 
     - name: "Validate input"
diff --git a/noxfile.py b/noxfile.py
index 3d2a65e8..93914d83 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -31,7 +31,7 @@
     nox.options.sessions.append("conda_tests")
 
 
-@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11"])
+@nox.session(python=["3.7", "3.8", "3.9", "3.10", "3.11", "3.12"])
 def tests(session: nox.Session) -> None:
     """Run test suite with pytest."""
     session.create_tmp()  # Fixes permission errors on Windows
@@ -133,7 +133,17 @@ def _check_python_version(session: nox.Session) -> None:
 
 
 @nox.session(
-    python=["3.7", "3.8", "3.9", "3.10", "3.11", "pypy3.7", "pypy3.8", "pypy3.9"]
+    python=[
+        "3.7",
+        "3.8",
+        "3.9",
+        "3.10",
+        "3.11",
+        "3.12",
+        "pypy3.7",
+        "pypy3.8",
+        "pypy3.9",
+    ]
 )
 def github_actions_default_tests(session: nox.Session) -> None:
     """Check default versions installed by the nox GHA Action"""