diff --git a/.github/workflows/pre-commit.yaml b/.github/workflows/pre-commit.yaml
index 683c85b..26dc15f 100644
--- a/.github/workflows/pre-commit.yaml
+++ b/.github/workflows/pre-commit.yaml
@@ -7,10 +7,10 @@ jobs:
   main:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-    - uses: actions/setup-python@f677139bbe7f9c59b41e40162b753c062f5d49a3 # v5.2.0
+    - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+    - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
       with:
         python-version: 3.x
     - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
-    - uses: pre-commit-ci/lite-action@9d882e7a565f7008d4faf128f27d1cb6503d4ebf # v1.0.2
+    - uses: pre-commit-ci/lite-action@5d6cc0eb514c891a40562a58a8e71576c5c7fb43 # v1.1.0
       if: ${{ !cancelled() }}
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index 237218e..33c2f14 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -7,8 +7,8 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      - uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
         with:
           python-version: '3.x'
           cache: pip
@@ -17,7 +17,7 @@ jobs:
       # Use the commit date instead of the current date during the build.
       - run: echo "SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct)" >> $GITHUB_ENV
       - run: python -m build
-      - uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4.3.6
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
           path: ./dist
   create-release:
@@ -26,7 +26,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
       - name: create release
         run: >
           gh release create --draft --repo ${{ github.repository }}
@@ -44,11 +44,11 @@ jobs:
     permissions:
       id-token: write
     steps:
-      - uses: actions/download-artifact@fa0a91b85d4f404e444e00e005971372dc801d16 # v4.1.8
-      - uses: pypa/gh-action-pypi-publish@ec4db0b4ddc65acdf4bff5fa45ac92d78b56bdf0 # v1.9.0
+      - uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
+      - uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
         with:
           repository-url: https://test.pypi.org/legacy/
           packages-dir: artifact/
-      - uses: pypa/gh-action-pypi-publish@ec4db0b4ddc65acdf4bff5fa45ac92d78b56bdf0 # v1.9.0
+      - uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # v1.14.0
         with:
           packages-dir: artifact/
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index b1f9216..2941c22 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -21,17 +21,22 @@ jobs:
       fail-fast: false
       matrix:
         include:
+          - {python: '3.14'}
           - {python: '3.13'}
           - {python: '3.12'}
           - {python: '3.11'}
           - {python: '3.10'}
-          - {python: '3.9'}
     steps:
-      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
-      - uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f # v5.1.1
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
         with:
           python-version: ${{ matrix.python }}
-          allow-prereleases: true
-          cache: pip
-      - run: pip install tox
-      - run: tox run -e ${{ matrix.tox || format('py{0}', matrix.python) }}
+      - run: uv run pytest
+  minversions:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: astral-sh/setup-uv@08807647e7069bb48b6ef5acd8ec9567f424441b # v8.1.0
+        with:
+          python-version: '3.10'
+      - run: uv run --resolution=lowest-direct pytest --override-ini=filterwarnings=
diff --git a/.gitignore b/.gitignore
index 3479a64..88db946 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,5 @@ env/
 
 # Editors
 .idea
+
+uv.lock
diff --git a/CHANGES.rst b/CHANGES.rst
index 7bc90a0..c275ed9 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,11 @@
+Version 0.4.3
+-------------
+
+Unreleased
+
+- Remove python 3.9 support
+- Add python 3.14 support
+
 Version 0.4.2
 -------------
 
diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 50e493f..0000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,8 +0,0 @@
-include CHANGES.rst
-include LICENSE.txt
-include MANIFEST.in
-include README.md
-recursive-include docs *
-recursive-include tests *
-recursive-exclude docs/_build *
-recursive-exclude tests *.pyc
diff --git a/docs/requirements.txt b/docs/requirements.txt
deleted file mode 100644
index d9327a1..0000000
--- a/docs/requirements.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-Sphinx~=8.1.2
-Pallets-Sphinx-Themes~=2.2.0
-sphinx-issues~=5.0.0
-sphinxcontrib-log-cabinet~=1.0.1
-python-dateutil~=2.9.0.post0
diff --git a/pyproject.toml b/pyproject.toml
index 125e6a6..93d2150 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,13 +16,28 @@ classifiers = [
     "Topic :: Internet :: WWW/HTTP :: WSGI :: Application",
     "Topic :: Software Development :: Libraries :: Application Frameworks",
 ]
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 dependencies = [
     "WTForms>=3.1",
     "SQLAlchemy>=1.4",
 ]
 dynamic = ["version"]
 
+[dependency-groups]
+docs = [
+    "Sphinx~=7.0.0",
+    "Pallets-Sphinx-Themes~=2.2.0",
+    "sphinx-issues~=4.0.0",
+    "sphinxcontrib-log-cabinet~=1.0.1",
+    "python-dateutil~=2.8.2",
+]
+dev = [
+    "coverage>=7.0",
+    "pytest>=8.0",
+    "prek>=0.1",
+    "tox-uv>=1.28.1",
+]
+
 [project.urls]
 Documentation = "https://wtforms-sqlalchemy.readthedocs.io/"
 Changes = "https://wtforms-sqlalchemy.readthedocs.io/changes/"
@@ -46,7 +61,6 @@ include = [
     "docs/",
     "tests/",
     "CHANGES.rst",
-    "tox.ini",
 ]
 exclude = [
     "docs/_build/",
@@ -58,6 +72,42 @@ filterwarnings = [
     "error",
 ]
 
+[tool.tox]
+env_list = [
+    "py313",
+    "py312",
+    "py311",
+    "py310",
+    "pypy310",
+    "style",
+    "docs",
+    "minversions",
+]
+
+[tool.tox.env_run_base]
+runner = "uv-venv-runner"
+dependency_groups = ["dev"]
+commands = [["pytest", "{posargs}"]]
+
+[tool.tox.env.style]
+skip_install = true
+commands = [["prek", "run", "--all-files", "--show-diff-on-failure"]]
+
+[tool.tox.env.docs]
+dependency_groups = ["docs"]
+commands = [["sphinx-build", "-W", "-b", "html", "-d", "{env_tmp_dir}/doctrees", "docs", "{env_tmp_dir}/html"]]
+
+[tool.tox.env.coverage]
+commands = [
+    ["coverage", "run", "-m", "pytest", "--tb=short", "--basetemp={env_tmp_dir}", "{posargs}"],
+    ["coverage", "html"],
+    ["coverage", "report"],
+]
+
+[tool.tox.env.minversions]
+uv_resolution = "lowest-direct"
+commands = [["pytest", "--override-ini=filterwarnings=", "{posargs}"]]
+
 [tool.coverage.run]
 branch = true
 source = ["wtforms_sqlalchemy", "tests"]
diff --git a/tests/common.py b/tests/common.py
index 64e80bd..23c76ad 100644
--- a/tests/common.py
+++ b/tests/common.py
@@ -54,7 +54,7 @@ def contains_validator(field, v_type):
 class DummyPostData(dict):
     def getlist(self, key):
         v = self[key]
-        if not isinstance(v, (list, tuple)):
+        if not isinstance(v, list | tuple):
             v = [v]
         return v
 
diff --git a/tox.ini b/tox.ini
deleted file mode 100644
index a8c7fee..0000000
--- a/tox.ini
+++ /dev/null
@@ -1,30 +0,0 @@
-[tox]
-envlist =
-    py3{13,12,11,10,9},pypy3{10,9}
-    style
-    docs
-
-[testenv]
-deps =
-    -e .
-    pytest
-commands = pytest {posargs}
-
-[testenv:style]
-deps = pre-commit
-skip_install = true
-commands = pre-commit run --all-files --show-diff-on-failure
-
-[testenv:docs]
-deps = -r docs/requirements.txt
-commands = sphinx-build -W -b html -d {envtmpdir}/doctrees docs {envtmpdir}/html
-
-[testenv:coverage]
-deps =
-    -e .
-    pytest
-    coverage
-commands =
-    coverage run -m pytest --tb=short --basetemp={envtmpdir} {posargs}
-    coverage html
-    coverage report