diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index f119e39..f9d76d8 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -23,7 +23,7 @@ on:
 
 jobs:
   build-release:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     permissions:
       # id-token=write is required for pypa/gh-action-pypi-publish, and the PyPI
       # project needs to be configured to trust this workflow.
@@ -36,7 +36,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.12"
 
       - name: install build package
         run: |
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index a5fb1a9..4211115 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -24,7 +24,7 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-22.04
+    runs-on: "${{ matrix.runs-on || 'ubuntu-latest' }}"
 
     strategy:
       fail-fast: false
@@ -33,12 +33,15 @@ jobs:
           # oldest supported python and jupyterhub version
           - python-version: "3.8"
             pip-install-spec: "jupyterhub==2.3.0 sqlalchemy==1.*"
+            runs-on: ubuntu-22.04
           - python-version: "3.9"
             pip-install-spec: "jupyterhub==2.* sqlalchemy==1.*"
           - python-version: "3.10"
             pip-install-spec: "jupyterhub==3.*"
           - python-version: "3.11"
             pip-install-spec: "jupyterhub==4.*"
+          - python-version: "3.12"
+            pip-install-spec: "jupyterhub==5.*"
 
           # latest version of python and jupyterhub (including pre-releases)
           - python-version: "3.x"
@@ -48,7 +51,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-node@v4
         with:
-          node-version: "18"
+          node-version: "lts/*"
       - uses: actions/setup-python@v5
         with:
           python-version: "${{ matrix.python-version }}"
diff --git a/pyproject.toml b/pyproject.toml
index 961661d..6c88993 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,6 +19,7 @@ target_version = [
     "py39",
     "py310",
     "py311",
+    "py312",
 ]