diff --git a/.github/actions/setup-poetry-env/action.yml b/.github/actions/setup-poetry-env/action.yml
index d786811..18738ae 100644
--- a/.github/actions/setup-poetry-env/action.yml
+++ b/.github/actions/setup-poetry-env/action.yml
@@ -16,9 +16,18 @@ runs:
         python-version: ${{ inputs.python-version }}
 
     - name: Install Poetry
-      uses: snok/install-poetry@v1
-      with:
-        virtualenvs-in-project: true
+      env:
+        POETRY_VERSION: "1.7.1"
+      run: curl -sSL https://install.python-poetry.org | python - -y
+      shell: bash
+
+    - name: Add Poetry to Path
+      run: echo "$HOME/.local/bin" >> $GITHUB_PATH
+      shell: bash
+
+    - name: Configure Poetry virtual environment in project
+      run: poetry config virtualenvs.in-project true
+      shell: bash
 
     - name: Load cached venv
       id: cached-poetry-dependencies
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 21f5a47..50e747b 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -1,11 +1,10 @@
 name: Main
 
 on:
-  push:
-    branches:
-      - main
   pull_request:
     types: [opened, synchronize, reopened]
+  push:
+    branches: [main]
 
 jobs:
   quality:
@@ -31,40 +30,32 @@ jobs:
       - name: Check Poetry lock file consistency
         run: poetry lock --check
 
-  tox:
+  tests-and-type-check:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
       fail-fast: false
+    defaults:
+      run:
+        shell: bash
     steps:
       - name: Check out
         uses: actions/checkout@v4
 
-      - name: Set up python
-        uses: actions/setup-python@v5
+      - name: Set up the environment
+        uses: ./.github/actions/setup-poetry-env
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install Poetry
-        uses: snok/install-poetry@v1
-
-      - name: Load cached venv
-        uses: actions/cache@v4
-        with:
-          path: .tox
-          key: venv-${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('poetry.lock') }}
-
-      - name: Install tox
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install tox tox-gh-actions
+      - name: Run tests
+        run: poetry run pytest tests --cov --cov-config=pyproject.toml --cov-report=xml
 
-      - name: Test with tox
-        run: tox
+      - name: Check typing
+        run: poetry run mypy
 
-      - name: Upload coverage reports to Codecov with GitHub Action on Python 3.11
-        uses: codecov/codecov-action@v4
+      - name: Upload coverage reports to Codecov with GitHub Action on Python 3.11 for Ubuntu
+        uses: codecov/codecov-action@v3
         if: ${{ matrix.python-version == '3.11' }}
 
   check-docs:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5ef2a73..abe1078 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,7 +8,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.5.0"
+    rev: "v0.5.2"
     hooks:
       - id: ruff
         args: [--exit-non-zero-on-fix, --config=pyproject.toml]
diff --git a/Makefile b/Makefile
index 760f035..3083c59 100644
--- a/Makefile
+++ b/Makefile
@@ -72,11 +72,11 @@ build-and-publish: build publish ## Build and publish.
 
 .PHONY: docs-test
 docs-test: ## Test if documentation can be built without warnings or errors
-	@mkdocs build -s
+	@poetry run mkdocs build -s
 
 .PHONY: docs
 docs: ## Build and serve the documentation
-	@mkdocs serve
+	@poetry run mkdocs serve
 
 .PHONY: help
 help:
diff --git a/cookiecutter_poetry/cli.py b/cookiecutter_poetry/cli.py
index 0c8a713..6e26086 100644
--- a/cookiecutter_poetry/cli.py
+++ b/cookiecutter_poetry/cli.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import os
 
 
diff --git a/hooks/post_gen_project.py b/hooks/post_gen_project.py
index cd87c96..0fef2aa 100644
--- a/hooks/post_gen_project.py
+++ b/hooks/post_gen_project.py
@@ -1,4 +1,6 @@
 #!/usr/bin/env python
+from __future__ import annotations
+
 import os
 import shutil
 
diff --git a/hooks/pre_gen_project.py b/hooks/pre_gen_project.py
index be04802..0ea8841 100644
--- a/hooks/pre_gen_project.py
+++ b/hooks/pre_gen_project.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import re
 import sys
 
diff --git a/poetry.lock b/poetry.lock
index c979fe3..39908ce 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -213,63 +213,63 @@ rich = "*"
 
 [[package]]
 name = "coverage"
-version = "7.5.4"
+version = "7.6.0"
 description = "Code coverage measurement for Python"
 optional = false
 python-versions = ">=3.8"
 files = [
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+    {file = "coverage-7.6.0-cp311-cp311-win_amd64.whl", hash = "sha256:6379688fb4cfa921ae349c76eb1a9ab26b65f32b03d46bb0eed841fd4cb6afb1"},
+    {file = "coverage-7.6.0-cp312-cp312-macosx_10_9_x86_64.whl", hash = "sha256:f7db0b6ae1f96ae41afe626095149ecd1b212b424626175a6633c2999eaad45b"},
+    {file = "coverage-7.6.0-cp312-cp312-macosx_11_0_arm64.whl", hash = "sha256:bbdf9a72403110a3bdae77948b8011f644571311c2fb35ee15f0f10a8fc082e8"},
+    {file = "coverage-7.6.0-cp312-cp312-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:9cc44bf0315268e253bf563f3560e6c004efe38f76db03a1558274a6e04bf5d5"},
+    {file = "coverage-7.6.0-cp312-cp312-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:da8549d17489cd52f85a9829d0e1d91059359b3c54a26f28bec2c5d369524807"},
+    {file = "coverage-7.6.0-cp312-cp312-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:0086cd4fc71b7d485ac93ca4239c8f75732c2ae3ba83f6be1c9be59d9e2c6382"},
+    {file = "coverage-7.6.0-cp312-cp312-musllinux_1_2_aarch64.whl", hash = "sha256:1fad32ee9b27350687035cb5fdf9145bc9cf0a094a9577d43e909948ebcfa27b"},
+    {file = "coverage-7.6.0-cp312-cp312-musllinux_1_2_i686.whl", hash = "sha256:044a0985a4f25b335882b0966625270a8d9db3d3409ddc49a4eb00b0ef5e8cee"},
+    {file = "coverage-7.6.0-cp312-cp312-musllinux_1_2_x86_64.whl", hash = "sha256:76d5f82213aa78098b9b964ea89de4617e70e0d43e97900c2778a50856dac605"},
+    {file = "coverage-7.6.0-cp312-cp312-win32.whl", hash = "sha256:3c59105f8d58ce500f348c5b56163a4113a440dad6daa2294b5052a10db866da"},
+    {file = "coverage-7.6.0-cp312-cp312-win_amd64.whl", hash = "sha256:ca5d79cfdae420a1d52bf177de4bc2289c321d6c961ae321503b2ca59c17ae67"},
+    {file = "coverage-7.6.0-cp38-cp38-macosx_10_9_x86_64.whl", hash = "sha256:d39bd10f0ae453554798b125d2f39884290c480f56e8a02ba7a6ed552005243b"},
+    {file = "coverage-7.6.0-cp38-cp38-macosx_11_0_arm64.whl", hash = "sha256:beb08e8508e53a568811016e59f3234d29c2583f6b6e28572f0954a6b4f7e03d"},
+    {file = "coverage-7.6.0-cp38-cp38-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:b2e16f4cd2bc4d88ba30ca2d3bbf2f21f00f382cf4e1ce3b1ddc96c634bc48ca"},
+    {file = "coverage-7.6.0-cp38-cp38-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:6616d1c9bf1e3faea78711ee42a8b972367d82ceae233ec0ac61cc7fec09fa6b"},
+    {file = "coverage-7.6.0-cp38-cp38-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:ad4567d6c334c46046d1c4c20024de2a1c3abc626817ae21ae3da600f5779b44"},
+    {file = "coverage-7.6.0-cp38-cp38-musllinux_1_2_aarch64.whl", hash = "sha256:d17c6a415d68cfe1091d3296ba5749d3d8696e42c37fca5d4860c5bf7b729f03"},
+    {file = "coverage-7.6.0-cp38-cp38-musllinux_1_2_i686.whl", hash = "sha256:9146579352d7b5f6412735d0f203bbd8d00113a680b66565e205bc605ef81bc6"},
+    {file = "coverage-7.6.0-cp38-cp38-musllinux_1_2_x86_64.whl", hash = "sha256:cdab02a0a941af190df8782aafc591ef3ad08824f97850b015c8c6a8b3877b0b"},
+    {file = "coverage-7.6.0-cp38-cp38-win32.whl", hash = "sha256:df423f351b162a702c053d5dddc0fc0ef9a9e27ea3f449781ace5f906b664428"},
+    {file = "coverage-7.6.0-cp38-cp38-win_amd64.whl", hash = "sha256:f2501d60d7497fd55e391f423f965bbe9e650e9ffc3c627d5f0ac516026000b8"},
+    {file = "coverage-7.6.0-cp39-cp39-macosx_10_9_x86_64.whl", hash = "sha256:7221f9ac9dad9492cecab6f676b3eaf9185141539d5c9689d13fd6b0d7de840c"},
+    {file = "coverage-7.6.0-cp39-cp39-macosx_11_0_arm64.whl", hash = "sha256:ddaaa91bfc4477d2871442bbf30a125e8fe6b05da8a0015507bfbf4718228ab2"},
+    {file = "coverage-7.6.0-cp39-cp39-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:c4cbe651f3904e28f3a55d6f371203049034b4ddbce65a54527a3f189ca3b390"},
+    {file = "coverage-7.6.0-cp39-cp39-manylinux_2_5_i686.manylinux1_i686.manylinux_2_17_i686.manylinux2014_i686.whl", hash = "sha256:831b476d79408ab6ccfadaaf199906c833f02fdb32c9ab907b1d4aa0713cfa3b"},
+    {file = "coverage-7.6.0-cp39-cp39-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:46c3d091059ad0b9c59d1034de74a7f36dcfa7f6d3bde782c49deb42438f2450"},
+    {file = "coverage-7.6.0-cp39-cp39-musllinux_1_2_aarch64.whl", hash = "sha256:4d5fae0a22dc86259dee66f2cc6c1d3e490c4a1214d7daa2a93d07491c5c04b6"},
+    {file = "coverage-7.6.0-cp39-cp39-musllinux_1_2_i686.whl", hash = "sha256:07ed352205574aad067482e53dd606926afebcb5590653121063fbf4e2175166"},
+    {file = "coverage-7.6.0-cp39-cp39-musllinux_1_2_x86_64.whl", hash = "sha256:49c76cdfa13015c4560702574bad67f0e15ca5a2872c6a125f6327ead2b731dd"},
+    {file = "coverage-7.6.0-cp39-cp39-win32.whl", hash = "sha256:482855914928c8175735a2a59c8dc5806cf7d8f032e4820d52e845d1f731dca2"},
+    {file = "coverage-7.6.0-cp39-cp39-win_amd64.whl", hash = "sha256:543ef9179bc55edfd895154a51792b01c017c87af0ebaae092720152e19e42ca"},
+    {file = "coverage-7.6.0-pp38.pp39.pp310-none-any.whl", hash = "sha256:6fe885135c8a479d3e37a7aae61cbd3a0fb2deccb4dda3c25f92a49189f766d6"},
+    {file = "coverage-7.6.0.tar.gz", hash = "sha256:289cc803fa1dc901f84701ac10c9ee873619320f2f9aff38794db4a4a0268d51"},
 ]
 
 [package.dependencies]
@@ -280,21 +280,28 @@ toml = ["tomli"]
 
 [[package]]
 name = "deptry"
-version = "0.12.0"
+version = "0.16.2"
 description = "A command line utility to check for unused, missing and transitive dependencies in a Python project."
 optional = false
-python-versions = ">=3.8,<4.0"
+python-versions = ">=3.8"
 files = [
-    {file = "deptry-0.12.0-py3-none-any.whl", hash = "sha256:69c801a6ae1b39c7b8e0daf40dbe8b75f1f161277d206dd8f921f32cd22dad91"},
-    {file = "deptry-0.12.0.tar.gz", hash = "sha256:ac3cd32d149c92a9af12f63cd9486ddd1760f0277ed0cf306c6ef0388f57ff0a"},
+    {file = "deptry-0.16.2-cp38-abi3-macosx_10_12_x86_64.whl", hash = "sha256:24bfbae07bd6533c852c795e8d88d05a8ad0801bec0d3662e1a37db763c52540"},
+    {file = "deptry-0.16.2-cp38-abi3-macosx_11_0_arm64.whl", hash = "sha256:fc881688a2eaeafe51c0617d32a6535057bccdb74559cc667109f48f81cd976e"},
+    {file = "deptry-0.16.2-cp38-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:fed4b692f556e4c80acb42cec93e3b5fdc7fc2323049c2a0cfd9dfc4a9c7033e"},
+    {file = "deptry-0.16.2-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:93ec508a932d8f06c3bd1aa7a4548d5dbec92c3060d42eedcda3be9729bd7c3b"},
+    {file = "deptry-0.16.2-cp38-abi3-win_amd64.whl", hash = "sha256:eb92e9aacde66cfe001d6318eb0851ae0ca26fea441defed4765a47644daf8bb"},
+    {file = "deptry-0.16.2-pp310-pypy310_pp73-macosx_10_12_x86_64.whl", hash = "sha256:dfdceca2fbc87f4bce04df4207914a5eb37e67fb2107579ad2e88107c22d2456"},
+    {file = "deptry-0.16.2-pp310-pypy310_pp73-macosx_11_0_arm64.whl", hash = "sha256:96ab62dd5f4658735aac72d0e49f6d896eabf50a0e4e2cdecb436a1362aa696b"},
+    {file = "deptry-0.16.2-pp310-pypy310_pp73-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:7e4408fa5a8d146b55bc40f0829fb875efef33174a2679bd9954ce988b9bc0d7"},
+    {file = "deptry-0.16.2-pp310-pypy310_pp73-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:af976afc2a0583f48dc25f616d2566fecd7af5080675c8eccb161def88d93503"},
+    {file = "deptry-0.16.2-pp310-pypy310_pp73-win_amd64.whl", hash = "sha256:dd86c9d34aa75b91fb72b34110f0660b2277bf9a95fe9cae3ead36d465bc44ac"},
+    {file = "deptry-0.16.2.tar.gz", hash = "sha256:f0f752cf6f5e9f7445a79fcf195b772cd2d4b889cd260e23867dd8013caa74c1"},
 ]
 
 [package.dependencies]
-chardet = ">=4.0.0"
-click = ">=8.0.0,<9.0.0"
+click = ">=8.0.0,<9"
 colorama = {version = ">=0.4.6", markers = "sys_platform == \"win32\""}
-pathspec = ">=0.9.0"
-tomli = {version = ">=2.0.1,<3.0.0", markers = "python_version < \"3.11\""}
+tomli = {version = ">=2.0.1", markers = "python_version < \"3.11\""}
 
 [[package]]
 name = "distlib"
@@ -309,13 +316,13 @@ files = [
 
 [[package]]
 name = "exceptiongroup"
-version = "1.2.1"
+version = "1.2.2"
 description = "Backport of PEP 654 (exception groups)"
 optional = false
 python-versions = ">=3.7"
 files = [
-    {file = "exceptiongroup-1.2.1-py3-none-any.whl", hash = "sha256:5258b9ed329c5bbdd31a309f53cbfb0b155341807f6ff7606a1e801a891b29ad"},
-    {file = "exceptiongroup-1.2.1.tar.gz", hash = "sha256:a4785e48b045528f5bfe627b6ad554ff32def154f42372786903b7abcfe1aa16"},
+    {file = "exceptiongroup-1.2.2-py3-none-any.whl", hash = "sha256:3111b9d131c238bec2f8f516e123e14ba243563fb135d3fe885990585aa7795b"},
+    {file = "exceptiongroup-1.2.2.tar.gz", hash = "sha256:47c2edf7c6738fafb49fd34290706d1a1a2f4d1c6df275526b62cbb4aa5393cc"},
 ]
 
 [package.extras]
@@ -1203,4 +1210,4 @@ test = ["big-O", "importlib-resources", "jaraco.functools", "jaraco.itertools",
 [metadata]
 lock-version = "2.0"
 python-versions = ">=3.8,<4.0"
-content-hash = "4e21ad6d6075acdb3e93650cb5e9942c6c840d28d911cd44ed6c6d73f411f97f"
+content-hash = "ee76f1d7a3b0453c3232c838e19c524169231fc5feba9a7e3caa77ac7be30abc"
diff --git a/pyproject.toml b/pyproject.toml
index 7fd59dd..c6619e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ pytest = "^7.2.0"
 pre-commit = "^2.20.0"
 pytest-cookies = "^0.6.1"
 tox = "^3.25.1"
-deptry = "^0.12.0"
+deptry = "^0.16.2"
 mypy = "^0.991"
 pytest-cov = "^4.0.0"
 
@@ -37,11 +37,6 @@ mkdocs-material = "^8.5.10"
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
 
-[tool.black]
-line-length = 120
-target-version = ['py37']
-preview = true
-
 [tool.poetry.scripts]
 ccp = 'cookiecutter_poetry.cli:main'
 
@@ -67,7 +62,7 @@ show_error_codes = "True"
 
 [tool.deptry]
 extend_exclude = [
-  "{{cookiecutter.project_name}}"
+  ".+/test_foo.py"
 ]
 
 [tool.deptry.per_rule_ignores]
@@ -120,3 +115,6 @@ ignore = [
 
 [tool.ruff.lint.per-file-ignores]
 "tests/*" = ["S101", "S603"]
+
+[tool.ruff.lint.isort]
+required-imports = ["from __future__ import annotations"]
diff --git a/tests/test_cookiecutter.py b/tests/test_cookiecutter.py
index d3ecc72..7c6b6c3 100644
--- a/tests/test_cookiecutter.py
+++ b/tests/test_cookiecutter.py
@@ -1,22 +1,10 @@
+from __future__ import annotations
+
 import os
 import shlex
 import subprocess
-from contextlib import contextmanager
-
-
-@contextmanager
-def run_within_dir(path: str):
-    oldpwd = os.getcwd()
-    os.chdir(path)
-    try:
-        yield
-    finally:
-        os.chdir(oldpwd)
-
 
-def file_contains_text(file: str, text: str) -> bool:
-    with open(file) as f:
-        return f.read().find(text) != -1
+from tests.utils import file_contains_text, is_valid_yaml, run_within_dir
 
 
 def test_bake_project(cookies):
@@ -37,6 +25,7 @@ def test_using_pytest(cookies, tmp_path):
         assert result.exception is None
         assert result.project_path.name == "example-project"
         assert result.project_path.is_dir()
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "main.yml")
 
         # Install the poetry environment and run the tests.
         with run_within_dir(str(result.project_path)):
@@ -66,6 +55,7 @@ def test_cicd_contains_artifactory_secrets(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake(extra_context={"publish_to": "artifactory"})
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "on-release-main.yml")
         for text in ["ARTIFACTORY_URL", "ARTIFACTORY_USERNAME", "ARTIFACTORY_PASSWORD"]:
             assert file_contains_text(f"{result.project_path}/.github/workflows/on-release-main.yml", text)
         assert file_contains_text(f"{result.project_path}/Makefile", "build-and-publish")
@@ -75,6 +65,7 @@ def test_cicd_contains_pypi_secrets(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake(extra_context={"publish_to": "pypi"})
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "on-release-main.yml")
         assert file_contains_text(f"{result.project_path}/.github/workflows/on-release-main.yml", "PYPI_TOKEN")
         assert file_contains_text(f"{result.project_path}/Makefile", "build-and-publish")
 
@@ -83,6 +74,7 @@ def test_dont_publish(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake(extra_context={"publish_to": "none"})
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "on-release-main.yml")
         assert not file_contains_text(
             f"{result.project_path}/.github/workflows/on-release-main.yml", "make build-and-publish"
         )
@@ -92,6 +84,8 @@ def test_mkdocs(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake(extra_context={"mkdocs": "y"})
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "main.yml")
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "on-release-main.yml")
         assert file_contains_text(f"{result.project_path}/.github/workflows/on-release-main.yml", "mkdocs gh-deploy")
         assert file_contains_text(f"{result.project_path}/Makefile", "docs:")
         assert os.path.isdir(f"{result.project_path}/docs")
@@ -101,6 +95,8 @@ def test_not_mkdocs(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake(extra_context={"mkdocs": "n"})
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "main.yml")
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "on-release-main.yml")
         assert not file_contains_text(
             f"{result.project_path}/.github/workflows/on-release-main.yml", "mkdocs gh-deploy"
         )
@@ -112,7 +108,6 @@ def test_tox(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake()
         assert result.exit_code == 0
-        assert file_contains_text(f"{result.project_path}/.github/workflows/main.yml", "pip install tox tox-gh-actions")
         assert os.path.isfile(f"{result.project_path}/tox.ini")
         assert file_contains_text(f"{result.project_path}/tox.ini", "[tox]")
 
@@ -135,6 +130,7 @@ def test_codecov(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake()
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "main.yml")
         assert os.path.isfile(f"{result.project_path}/codecov.yaml")
         assert os.path.isfile(f"{result.project_path}/.github/workflows/validate-codecov-config.yml")
 
@@ -143,6 +139,7 @@ def test_not_codecov(cookies, tmp_path):
     with run_within_dir(tmp_path):
         result = cookies.bake(extra_context={"codecov": "n"})
         assert result.exit_code == 0
+        assert is_valid_yaml(result.project_path / ".github" / "workflows" / "main.yml")
         assert not os.path.isfile(f"{result.project_path}/codecov.yaml")
         assert not os.path.isfile(f"{result.project_path}/.github/workflows/validate-codecov-config.yml")
 
diff --git a/tests/utils.py b/tests/utils.py
new file mode 100644
index 0000000..03f5605
--- /dev/null
+++ b/tests/utils.py
@@ -0,0 +1,42 @@
+from __future__ import annotations
+
+import os
+from contextlib import contextmanager
+from pathlib import Path
+
+import yaml
+
+
+def is_valid_yaml(path: str | Path):
+    path = Path(path)
+
+    if not path.is_file():
+        print(f"File does not exist: {path}")
+        return False
+
+    try:
+        with path.open("r") as file:
+            yaml.safe_load(file)
+    except yaml.YAMLError as e:
+        print(f"Invalid YAML file: {path} - Error: {e}")
+        return False
+    except OSError as e:
+        print(f"Error reading file: {path} - Error: {e}")
+        return False
+
+    return True
+
+
+@contextmanager
+def run_within_dir(path: str):
+    oldpwd = os.getcwd()
+    os.chdir(path)
+    try:
+        yield
+    finally:
+        os.chdir(oldpwd)
+
+
+def file_contains_text(file: str, text: str) -> bool:
+    with open(file) as f:
+        return f.read().find(text) != -1
diff --git a/{{cookiecutter.project_name}}/.github/actions/setup-poetry-env/action.yml b/{{cookiecutter.project_name}}/.github/actions/setup-poetry-env/action.yml
index 339086c..4e5f9fd 100644
--- a/{{cookiecutter.project_name}}/.github/actions/setup-poetry-env/action.yml
+++ b/{{cookiecutter.project_name}}/.github/actions/setup-poetry-env/action.yml
@@ -16,9 +16,18 @@ runs:
         python-version: {% raw %}${{ inputs.python-version }}{% endraw %}
 
     - name: Install Poetry
-      uses: snok/install-poetry@v1
-      with:
-        virtualenvs-in-project: true
+      env:
+        POETRY_VERSION: "1.7.1"
+      run: curl -sSL https://install.python-poetry.org | python - -y
+      shell: bash
+
+    - name: Add Poetry to Path
+      run: echo "$HOME/.local/bin" >> $GITHUB_PATH
+      shell: bash
+
+    - name: Configure Poetry virtual environment in project
+      run: poetry config virtualenvs.in-project true
+      shell: bash
 
     - name: Load cached venv
       id: cached-poetry-dependencies
diff --git a/{{cookiecutter.project_name}}/.github/workflows/main.yml b/{{cookiecutter.project_name}}/.github/workflows/main.yml
index d244e9c..329ec83 100644
--- a/{{cookiecutter.project_name}}/.github/workflows/main.yml
+++ b/{{cookiecutter.project_name}}/.github/workflows/main.yml
@@ -25,37 +25,30 @@ jobs:
       - name: Run checks
         run: make check
 
-  tox:
+  tests-and-type-check:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11']
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
       fail-fast: false
+    defaults:
+      run:
+        shell: bash
     steps:
       - name: Check out
         uses: actions/checkout@v4
 
-      - name: Set up python
-        uses: actions/setup-python@v5
+      - name: Set up the environment
+        uses: ./.github/actions/setup-poetry-env
         with:
           python-version: {% raw %}${{ matrix.python-version }}{% endraw %}
 
-      - name: Install Poetry
-        uses: snok/install-poetry@v1
-
-      - name: Load cached venv
-        uses: actions/cache@v4
-        with:
-          path: .tox
-          key: {% raw %}venv-${{ runner.os }}-${{ matrix.python-version }}-${{ hashFiles('poetry.lock') }}{% endraw %}
+      - name: Run tests
+        run: poetry run pytest tests --cov --cov-config=pyproject.toml --cov-report=xml
 
-      - name: Install tox
-        run: |
-          python -m pip install --upgrade pip
-          python -m pip install tox tox-gh-actions
+      - name: Check typing
+        run: poetry run mypy
 
-      - name: Test with tox
-        run: tox
 {% if cookiecutter.codecov == "y" %}
       - name: Upload coverage reports to Codecov with GitHub Action on Python 3.11
         uses: codecov/codecov-action@v4
diff --git a/{{cookiecutter.project_name}}/.pre-commit-config.yaml b/{{cookiecutter.project_name}}/.pre-commit-config.yaml
index 5e3015b..1f33da2 100644
--- a/{{cookiecutter.project_name}}/.pre-commit-config.yaml
+++ b/{{cookiecutter.project_name}}/.pre-commit-config.yaml
@@ -10,7 +10,7 @@ repos:
       - id: trailing-whitespace
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: "v0.1.6"
+    rev: "v0.5.2"
     hooks:
       - id: ruff
         args: [--exit-non-zero-on-fix]
diff --git a/{{cookiecutter.project_name}}/pyproject.toml b/{{cookiecutter.project_name}}/pyproject.toml
index 9ed5223..95ef60b 100644
--- a/{{cookiecutter.project_name}}/pyproject.toml
+++ b/{{cookiecutter.project_name}}/pyproject.toml
@@ -19,7 +19,7 @@ pytest = "^7.2.0"
 pytest-cov = "^4.0.0"
 {% endif -%}
 {% if cookiecutter.deptry == 'y' -%}
-deptry = "^0.12.0"
+deptry = "^0.16.2"
 {% endif -%}
 mypy = "^1.5.1"
 pre-commit = "^3.4.0"
@@ -50,7 +50,7 @@ show_error_codes = "True"
 testpaths = ["tests"]
 
 [tool.ruff]
-target-version = "py37"
+target-version = "py39"
 line-length = 120
 fix = true
 select = [