diff --git a/poetry.lock b/poetry.lock
index 0d1eeee..b4af79f 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -197,6 +197,17 @@ files = [
     {file = "cachelib-0.10.2.tar.gz", hash = "sha256:593faeee62a7c037d50fc835617a01b887503f972fb52b188ae7e50e9cb69740"},
 ]
 
+[[package]]
+name = "cachetools"
+version = "5.3.1"
+description = "Extensible memoizing collections and decorators"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "cachetools-5.3.1-py3-none-any.whl", hash = "sha256:95ef631eeaea14ba2e36f06437f36463aac3a096799e876ee55e5cdccb102590"},
+    {file = "cachetools-5.3.1.tar.gz", hash = "sha256:dce83f2d9b4e1f732a8cd44af8e8fab2dbe46201467fc98b3ef8f269092bf62b"},
+]
+
 [[package]]
 name = "certifi"
 version = "2023.7.22"
@@ -219,6 +230,17 @@ files = [
     {file = "cfgv-3.3.1.tar.gz", hash = "sha256:f5a830efb9ce7a445376bb66ec94c638a9787422f96264c98edc6bdeed8ab736"},
 ]
 
+[[package]]
+name = "chardet"
+version = "5.2.0"
+description = "Universal encoding detector for Python 3"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "chardet-5.2.0-py3-none-any.whl", hash = "sha256:e1cf59446890a00105fe7b7912492ea04b6e6f06d4b742b2c788469e34c82970"},
+    {file = "chardet-5.2.0.tar.gz", hash = "sha256:1b3b6ff479a8c414bc3fa2c0852995695c4a026dcd6d0633b2dd092ca39c1cf7"},
+]
+
 [[package]]
 name = "charset-normalizer"
 version = "3.3.0"
@@ -1313,6 +1335,25 @@ files = [
 [package.extras]
 plugins = ["importlib-metadata"]
 
+[[package]]
+name = "pyproject-api"
+version = "1.5.3"
+description = "API to interact with the python pyproject.toml based projects"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "pyproject_api-1.5.3-py3-none-any.whl", hash = "sha256:14cf09828670c7b08842249c1f28c8ee6581b872e893f81b62d5465bec41502f"},
+    {file = "pyproject_api-1.5.3.tar.gz", hash = "sha256:ffb5b2d7cad43f5b2688ab490de7c4d3f6f15e0b819cb588c4b771567c9729eb"},
+]
+
+[package.dependencies]
+packaging = ">=23.1"
+tomli = {version = ">=2.0.1", markers = "python_version < \"3.11\""}
+
+[package.extras]
+docs = ["furo (>=2023.5.20)", "sphinx (>=7.0.1)", "sphinx-autodoc-typehints (>=1.23,!=1.23.4)"]
+testing = ["covdefaults (>=2.3)", "importlib-metadata (>=6.6)", "pytest (>=7.3.1)", "pytest-cov (>=4.1)", "pytest-mock (>=3.10)", "setuptools (>=67.8)", "wheel (>=0.40)"]
+
 [[package]]
 name = "pytest"
 version = "6.2.5"
@@ -1698,40 +1739,43 @@ files = [
 
 [[package]]
 name = "tomlkit"
-version = "0.7.2"
+version = "0.12.1"
 description = "Style preserving TOML library"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.7"
 files = [
-    {file = "tomlkit-0.7.2-py2.py3-none-any.whl", hash = "sha256:173ad840fa5d2aac140528ca1933c29791b79a374a0861a80347f42ec9328117"},
-    {file = "tomlkit-0.7.2.tar.gz", hash = "sha256:d7a454f319a7e9bd2e249f239168729327e4dd2d27b17dc68be264ad1ce36754"},
+    {file = "tomlkit-0.12.1-py3-none-any.whl", hash = "sha256:712cbd236609acc6a3e2e97253dfc52d4c2082982a88f61b640ecf0817eab899"},
+    {file = "tomlkit-0.12.1.tar.gz", hash = "sha256:38e1ff8edb991273ec9f6181244a6a391ac30e9f5098e7535640ea6be97a7c86"},
 ]
 
 [[package]]
 name = "tox"
-version = "3.28.0"
+version = "4.8.0"
 description = "tox is a generic virtualenv management and test command line tool"
 optional = false
-python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+python-versions = ">=3.7"
 files = [
-    {file = "tox-3.28.0-py2.py3-none-any.whl", hash = "sha256:57b5ab7e8bb3074edc3c0c0b4b192a4f3799d3723b2c5b76f1fa9f2d40316eea"},
-    {file = "tox-3.28.0.tar.gz", hash = "sha256:d0d28f3fe6d6d7195c27f8b054c3e99d5451952b54abdae673b71609a581f640"},
+    {file = "tox-4.8.0-py3-none-any.whl", hash = "sha256:4991305a56983d750a0d848a34242be290452aa88d248f1bf976e4036ee8b213"},
+    {file = "tox-4.8.0.tar.gz", hash = "sha256:2adacf435b12ccf10b9dfa9975d8ec0afd7cbae44d300463140d2117b968037b"},
 ]
 
 [package.dependencies]
-colorama = {version = ">=0.4.1", markers = "platform_system == \"Windows\""}
-filelock = ">=3.0.0"
-importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
-packaging = ">=14"
-pluggy = ">=0.12.0"
-py = ">=1.4.17"
-six = ">=1.14.0"
-tomli = {version = ">=2.0.1", markers = "python_version >= \"3.7\" and python_version < \"3.11\""}
-virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,<20.0.3 || >20.0.3,<20.0.4 || >20.0.4,<20.0.5 || >20.0.5,<20.0.6 || >20.0.6,<20.0.7 || >20.0.7"
+cachetools = ">=5.3.1"
+chardet = ">=5.1"
+colorama = ">=0.4.6"
+filelock = ">=3.12.2"
+importlib-metadata = {version = ">=6.7", markers = "python_version < \"3.8\""}
+packaging = ">=23.1"
+platformdirs = ">=3.9.1"
+pluggy = ">=1.2"
+pyproject-api = ">=1.5.3"
+tomli = {version = ">=2.0.1", markers = "python_version < \"3.11\""}
+typing-extensions = {version = ">=4.7.1", markers = "python_version < \"3.8\""}
+virtualenv = ">=20.24.1"
 
 [package.extras]
-docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
-testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "pathlib2 (>=2.3.3)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)"]
+docs = ["furo (>=2023.5.20)", "sphinx (>=7.0.1)", "sphinx-argparse-cli (>=1.11.1)", "sphinx-autodoc-typehints (>=1.23.3,!=1.23.4)", "sphinx-copybutton (>=0.5.2)", "sphinx-inline-tabs (>=2023.4.21)", "sphinxcontrib-towncrier (>=0.2.1a0)", "towncrier (>=23.6)"]
+testing = ["build[virtualenv] (>=0.10)", "covdefaults (>=2.3)", "detect-test-pollution (>=1.1.1)", "devpi-process (>=0.3.1)", "diff-cover (>=7.7)", "distlib (>=0.3.7)", "flaky (>=3.7)", "hatch-vcs (>=0.3)", "hatchling (>=1.17.1)", "psutil (>=5.9.5)", "pytest (>=7.4)", "pytest-cov (>=4.1)", "pytest-mock (>=3.11.1)", "pytest-xdist (>=3.3.1)", "re-assert (>=1.1)", "time-machine (>=2.10)", "wheel (>=0.40)"]
 
 [[package]]
 name = "typed-ast"
@@ -1864,4 +1908,4 @@ compiler = ["black", "isort", "jinja2"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.7"
-content-hash = "1b58712beae70053ef9187c5635909a548abb7c05776b09f37416ab122167ade"
+content-hash = "a522aa8f9c81809b07db9458b493302642836cb300e87efaeed441a451fb0558"
diff --git a/pyproject.toml b/pyproject.toml
index 5b8c5a3..8e77da4 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,22 +24,24 @@ typing-extensions = "^4.7.1"
 [tool.poetry.group.dev.dependencies]
 asv = "^0.4.2"
 bpython = "^0.19"
-grpcio-tools = "^1.54.2"
 jinja2 = ">=3.0.3"
 mypy = "^0.930"
+sphinx = "3.1.2"
+sphinx-rtd-theme = "0.5.0"
+pre-commit = "^2.17.0"
+grpcio-tools = "^1.54.2"
+tox = "^4.0.0"
+
+[tool.poetry.group.test.dependencies]
 poethepoet = ">=0.9.0"
-protobuf = "^4.21.6"
 pytest = "^6.2.5"
 pytest-asyncio = "^0.12.0"
 pytest-cov = "^2.9.0"
 pytest-mock = "^3.1.1"
-sphinx = "3.1.2"
-sphinx-rtd-theme = "0.5.0"
-tomlkit = "^0.7.0"
-tox = "^3.15.1"
-pre-commit = "^2.17.0"
 pydantic = ">=1.8.0,<2"
+protobuf = "^4"
 cachelib = "^0.10.2"
+tomlkit = ">=0.7.0"
 
 [tool.poetry.scripts]
 protoc-gen-python_betterproto = "betterproto.plugin:main"
@@ -135,14 +137,21 @@ omit = ["betterproto/tests/*"]
 [tool.tox]
 legacy_tox_ini = """
 [tox]
-isolated_build = true
-envlist = py37, py38, py310
+requires =
+    tox>=4.2
+    tox-poetry-installer[poetry]==1.0.0b1
+env_list =
+    py311
+    py38
+    py37
 
 [testenv]
-whitelist_externals = poetry
 commands =
-    poetry install -v --extras compiler
-    poetry run pytest --cov betterproto
+    pytest {posargs: --cov betterproto}
+poetry_dep_groups =
+    test
+require_locked_deps = true
+require_poetry = true
 """
 
 [build-system]