diff --git a/duties.py b/duties.py
new file mode 100644
index 0000000..34885fd
--- /dev/null
+++ b/duties.py
@@ -0,0 +1,377 @@
+from __future__ import annotations
+
+import importlib
+import os
+import pathlib
+import re
+import shutil
+import sys
+from io import StringIO
+from typing import List, Optional, Pattern
+from urllib.request import urlopen
+
+from duty import duty
+
+PACKAGE_NAME = "csops"
+REPO_URL = "https://github.com/dtomlinson91/csops"
+
+
+@duty(post=["export"])
+def update_deps(ctx, dry: bool = False):
+    """
+    Update the dependencies using Poetry.
+
+    Args:
+        ctx: The context instance (passed automatically).
+        dry (bool, optional) = If True will update the `poetry.lock` without updating the
+            dependencies themselves. Defaults to False.
+
+    Example:
+        `duty update_deps dry=False`
+    """
+    dry_run = "--dry-run" if dry else ""
+    ctx.run(
+        ["poetry", "update", dry_run],
+        title=f"Updating poetry deps {dry_run}",
+    )
+
+
+@duty
+def test(ctx):
+    """
+    Run tests using pytest.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    pytest_results = ctx.run(["pytest", "-v"], pty=True)
+    print(pytest_results)
+
+
+@duty
+def coverage(ctx):
+    """
+    Generate a coverage report and save to XML and HTML.
+
+    Args:
+        ctx: The context instance (passed automatically).
+
+    Example:
+        `duty coverage`
+    """
+    ctx.run(["coverage", "run", "--source", PACKAGE_NAME, "-m", "pytest"])
+    res = ctx.run(["coverage", "report"], pty=True)
+    print(res)
+    ctx.run(["coverage", "html"])
+    ctx.run(["coverage", "xml"])
+
+
+@duty
+def bump(ctx, version: str = "patch"):
+    """
+    Bump the version using Poetry and update _version.py.
+
+    This duty is ran as part of `duty release`.
+
+    Args:
+        ctx: The context instance (passed automatically).
+        version (str, optional) = poetry version flag. Available options are:
+            patch, minor, major. Defaults to patch.
+
+    Example:
+        `duty bump version=major`
+    """
+
+    # bump with poetry
+    result = ctx.run(["poetry", "version", version])
+    new_version = re.search(r"(?:.*)(?:\s)(\d+\.\d+\.\d+)$", result)
+    print(new_version.group(0))
+
+    # update _version.py
+    version_file = pathlib.Path(PACKAGE_NAME) / "_version.py"
+    with version_file.open("w", encoding="utf-8") as version_file:
+        version_file.write(
+            f'"""Module containing the version of {PACKAGE_NAME}."""\n\n' + f'__version__ = "{new_version.group(1)}"\n'
+        )
+    print(f"Bumped _version.py to {new_version.group(1)}")
+
+
+@duty
+def build(ctx):
+    """
+    Build with poetry and extract the setup.py and copy to project root.
+
+    Args:
+        ctx: The context instance (passed automatically).
+
+    Example:
+        `duty build`
+    """
+
+    repo_root = pathlib.Path(".")
+
+    # build with poetry
+    result = ctx.run(["poetry", "build"])
+    print(result)
+
+    # extract the setup.py from the tar
+    extracted_tar = re.search(r"(?:.*)(?:Built\s)(.*)", result)
+    tar_file = pathlib.Path(f"./dist/{extracted_tar.group(1)}")
+    shutil.unpack_archive(tar_file, tar_file.parents[0])
+
+    # copy setup.py to repo root
+    extracted_path = tar_file.parents[0] / os.path.splitext(tar_file.stem)[0]
+    setup_py = extracted_path / "setup.py"
+    shutil.copyfile(setup_py, (repo_root / "setup.py"))
+
+    # cleanup
+    shutil.rmtree(extracted_path)
+
+
+@duty
+def release(ctx, version: str = "patch") -> None:
+    """
+    Prepare package for a new release.
+
+    Will run bump, build, export. Manual running of publish is required afterwards.
+
+    Args:
+        ctx: The context instance (passed automatically).
+        version (str): poetry version flag. Available options are: patch, minor, major.
+    """
+    print(ctx.run(["duty", "bump", f"version={version}"]))
+    ctx.run(["duty", "build"])
+    ctx.run(["duty", "export"])
+    print(
+        "✔ Check generated files. Run `duty changelog planned_release= previous_release=` and `duty publish password=`"
+        " when ready to publish."
+    )
+
+
+@duty
+def export(ctx):
+    """
+    Export the dependencies to a requirements.txt file.
+
+    Args:
+        ctx: The context instance (passed automatically).
+
+    Example:
+        `duty export`
+    """
+    requirements_content = ctx.run(
+        [
+            "poetry",
+            "export",
+            "-f",
+            "requirements.txt",
+            "--without-hashes",
+        ]
+    )
+    requirements_dev_content = ctx.run(
+        [
+            "poetry",
+            "export",
+            "-f",
+            "requirements.txt",
+            "--without-hashes",
+            "--dev",
+        ]
+    )
+
+    requirements = pathlib.Path(".") / "requirements.txt"
+    requirements_dev = pathlib.Path(".") / "requirements_dev.txt"
+
+    with requirements.open("w", encoding="utf-8") as req:
+        req.write(requirements_content)
+
+    with requirements_dev.open("w", encoding="utf-8") as req:
+        req.write(requirements_dev_content)
+
+
+@duty
+def publish(ctx, password: str):
+    """
+    Publish the package to pypi.org.
+
+    Args:
+        ctx: The context instance (passed automatically).
+        password (str): pypi.org password.
+
+    Example:
+        `duty publish password=$my_password`
+    """
+    dist_dir = pathlib.Path(".") / "dist"
+    rm_result = rm_tree(dist_dir)
+    print(rm_result)
+
+    publish_result = ctx.run(["poetry", "publish", "-u", "dtomlinson", "-p", password, "--build"])
+    print(publish_result)
+
+
+@duty(silent=True)
+def clean(ctx):
+    """
+    Delete temporary files.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    ctx.run("rm -rf .mypy_cache")
+    ctx.run("rm -rf .pytest_cache")
+    ctx.run("rm -rf tests/.pytest_cache")
+    ctx.run("rm -rf build")
+    ctx.run("rm -rf dist")
+    ctx.run("rm -rf pip-wheel-metadata")
+    ctx.run("rm -rf site")
+    ctx.run("rm -rf coverage.xml")
+    ctx.run("rm -rf pytest.xml")
+    ctx.run("rm -rf htmlcov")
+    ctx.run("find . -iname '.coverage*' -not -name .coveragerc | xargs rm -rf")
+    ctx.run("find . -type d -name __pycache__ | xargs rm -rf")
+    ctx.run("find . -name '*.rej' -delete")
+
+
+@duty
+def format(ctx):
+    """
+    Format code using Black and isort.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    res = ctx.run(["black", "--line-length=99", PACKAGE_NAME], pty=True, title="Running Black")
+    print(res)
+
+    res = ctx.run(["isort", PACKAGE_NAME])
+    print(res)
+
+
+@duty(pre=["check_code_quality", "check_types", "check_docs", "check_dependencies"])
+def check(ctx):
+    """
+    Check the code quality, check types, check documentation builds and check dependencies for vulnerabilities.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+
+
+@duty
+def check_code_quality(ctx):
+    """
+    Check the code quality using prospector.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    ctx.run(["prospector", PACKAGE_NAME], pty=True, title="Checking code quality with prospector")
+
+
+@duty
+def check_types(ctx):
+    """
+    Check the types using mypy.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    ctx.run(["mypy", PACKAGE_NAME], pty=True, title="Checking types with MyPy")
+
+
+@duty
+def check_docs(ctx):
+    """
+    Check the documentation builds successfully.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    ctx.run(["mkdocs", "build"], title="Building documentation")
+
+
+@duty
+def check_dependencies(ctx):
+    """
+    Check dependencies with safety for vulnerabilities.
+
+    Args:
+        ctx: The context instance (passed automatically).
+    """
+    for module in sys.modules:
+        if module.startswith("safety.") or module == "safety":
+            del sys.modules[module]
+
+    importlib.invalidate_caches()
+
+    from safety import safety
+    from safety.formatter import report
+    from safety.util import read_requirements
+
+    requirements = ctx.run(
+        "poetry export --dev --without-hashes",
+        title="Exporting dependencies as requirements",
+        allow_overrides=False,
+    )
+
+    def check_vulns():
+        packages = list(read_requirements(StringIO(requirements)))
+        vulns = safety.check(packages=packages, ignore_ids="41002", key="", db_mirror="", cached=False, proxy={})
+        output_report = report(vulns=vulns, full=True, checked_packages=len(packages))
+        print(vulns)
+        if vulns:
+            print(output_report)
+
+    ctx.run(
+        check_vulns,
+        stdin=requirements,
+        title="Checking dependencies",
+        pty=True,
+    )
+
+
+@duty
+def changelog(ctx, planned_release: Optional[str] = None, previous_release: Optional[str] = None):
+    """
+    Generate a changelog with git-cliff.
+
+    Args:
+        ctx: The context instance (passed automatically).
+        planned_release (str, optional): The planned release version. Example: v1.0.2
+        previous_release (str, optional): The previous release version. Example: v1.0.1
+    """
+    generated_changelog: str = ctx.run(["git", "cliff", "-u", "-t", planned_release, "-s", "header"])[:-1]
+    if previous_release is not None:
+        generated_changelog: list = generated_changelog.splitlines()
+        generated_changelog.insert(
+            1,
+            f"<small>[Compare with {previous_release}]({REPO_URL}/compare/{previous_release}..{planned_release})</small>",
+        )
+        generated_changelog: str = "\n".join([line for line in generated_changelog]) + "\n"
+    new_changelog = []
+
+    changelog_file = pathlib.Path(".") / "CHANGELOG.md"
+    with changelog_file.open("r", encoding="utf-8") as changelog_contents:
+        all_lines = changelog_contents.readlines()
+        for line_string in all_lines:
+            regex_string = re.search(r"(<!-- marker -->)", line_string)
+            new_changelog.append(line_string)
+            if isinstance(regex_string, re.Match):
+                new_changelog.append(generated_changelog)
+    with changelog_file.open("w", encoding="utf-8") as changelog_contents:
+        changelog_contents.writelines(new_changelog)
+
+
+def rm_tree(directory: pathlib.Path):
+    """
+    Recursively delete a directory and all its contents.
+
+    Args:
+        directory (pathlib.Path): The directory to delete.
+    """
+    for child in directory.glob("*"):
+        if child.is_file():
+            child.unlink()
+        else:
+            rm_tree(child)
+    directory.rmdir()
diff --git a/poetry.lock b/poetry.lock
index ce9ec3e..5cd87c8 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1,8 +1,191 @@
-package = []
+[[package]]
+name = "ansimarkup"
+version = "1.5.0"
+description = "Produce colored terminal text with an xml-like markup"
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+colorama = "*"
+
+[package.extras]
+devel = ["bumpversion (>=0.5.2)", "check-manifest (>=0.35)", "readme-renderer (>=16.0)", "flake8", "pep8-naming"]
+tests = ["tox (>=2.6.0)", "pytest (>=3.0.3)", "pytest-cov (>=2.3.1)"]
+
+[[package]]
+name = "cached-property"
+version = "1.5.2"
+description = "A decorator for caching properties in classes."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "colorama"
+version = "0.4.4"
+description = "Cross-platform colored terminal text."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "duty"
+version = "0.7.0"
+description = "A simple task runner."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+cached-property = {version = ">=1.5,<2.0", markers = "python_version < \"3.8\""}
+failprint = ">=0.8,<1.0"
+
+[[package]]
+name = "failprint"
+version = "0.8.0"
+description = "Run a command, print its output only if it fails."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+ansimarkup = ">=1.4,<2.0"
+jinja2 = ">=2.11,<4"
+ptyprocess = {version = ">=0.6,<1.0", markers = "sys_platform != \"win32\""}
+
+[[package]]
+name = "jinja2"
+version = "3.0.3"
+description = "A very fast and expressive template engine."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+MarkupSafe = ">=2.0"
+
+[package.extras]
+i18n = ["Babel (>=2.7)"]
+
+[[package]]
+name = "markupsafe"
+version = "2.0.1"
+description = "Safely add untrusted strings to HTML/XML markup."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[[package]]
+name = "ptyprocess"
+version = "0.7.0"
+description = "Run a subprocess in a pseudo terminal"
+category = "dev"
+optional = false
+python-versions = "*"
 
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "669741988c507fb04697bdb0c9077fa1b2342c356df6ae6c96baa3119a96a9ea"
+content-hash = "25c39083344a50ca67bfcb0dc9f537b2514800593d520f88c6251d0d6e1d6555"
 
 [metadata.files]
+ansimarkup = [
+    {file = "ansimarkup-1.5.0-py2.py3-none-any.whl", hash = "sha256:3146ca74af5f69e48a9c3d41b31085c0d6378f803edeb364856d37c11a684acf"},
+    {file = "ansimarkup-1.5.0.tar.gz", hash = "sha256:96c65d75bbed07d3dcbda8dbede8c2252c984f90d0ca07434b88a6bbf345fad3"},
+]
+cached-property = [
+    {file = "cached-property-1.5.2.tar.gz", hash = "sha256:9fa5755838eecbb2d234c3aa390bd80fbd3ac6b6869109bfc1b499f7bd89a130"},
+    {file = "cached_property-1.5.2-py2.py3-none-any.whl", hash = "sha256:df4f613cf7ad9a588cc381aaf4a512d26265ecebd5eb9e1ba12f1319eb85a6a0"},
+]
+colorama = [
+    {file = "colorama-0.4.4-py2.py3-none-any.whl", hash = "sha256:9f47eda37229f68eee03b24b9748937c7dc3868f906e8ba69fbcbdd3bc5dc3e2"},
+    {file = "colorama-0.4.4.tar.gz", hash = "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b"},
+]
+duty = [
+    {file = "duty-0.7.0-py3-none-any.whl", hash = "sha256:45068baf1639f16464aa40e9d8f698f0ae09408368fe53a34e9bfe6993dfd743"},
+    {file = "duty-0.7.0.tar.gz", hash = "sha256:5ebfd4640ab41e3058f1d8433f74228d60c9a808def1784e65319ef1899a9d15"},
+]
+failprint = [
+    {file = "failprint-0.8.0-py3-none-any.whl", hash = "sha256:a8215a7aca5ce687116b995cd3a9667180f222ab88c4328a5007d2fa0b5c0f78"},
+    {file = "failprint-0.8.0.tar.gz", hash = "sha256:4633b52f9395bf042ad996c96cd7819a94b2021833030dd1eb692ebbd86b89a1"},
+]
+jinja2 = [
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+    {file = "Jinja2-3.0.3.tar.gz", hash = "sha256:611bb273cd68f3b993fabdc4064fc858c5b47a973cb5aa7999ec1ba405c87cd7"},
+]
+markupsafe = [
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+ptyprocess = [
+    {file = "ptyprocess-0.7.0-py2.py3-none-any.whl", hash = "sha256:4b41f3967fce3af57cc7e94b888626c18bf37a083e3651ca8feeb66d492fef35"},
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+]
diff --git a/pyproject.toml b/pyproject.toml
index 72c59d0..7d37075 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,6 +8,7 @@ authors = ["Daniel Tomlinson <dtomlinson@panaetius.co.uk>"]
 python = "^3.7"
 
 [tool.poetry.dev-dependencies]
+duty = "^0.7.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]