diff --git a/aprsd_slack_plugin/conf/__init__.py b/aprsd_slack_plugin/conf/__init__.py
index 9973407..f3ea23a 100644
--- a/aprsd_slack_plugin/conf/__init__.py
+++ b/aprsd_slack_plugin/conf/__init__.py
@@ -2,6 +2,5 @@ from oslo_config import cfg
 
 from aprsd_slack_plugin.conf import slack
 
-
 CONF = cfg.CONF
 slack.register_opts(CONF)
diff --git a/aprsd_slack_plugin/conf/opts.py b/aprsd_slack_plugin/conf/opts.py
index b92ad6d..4d1e08c 100644
--- a/aprsd_slack_plugin/conf/opts.py
+++ b/aprsd_slack_plugin/conf/opts.py
@@ -31,7 +31,6 @@ import importlib
 import os
 import pkgutil
 
-
 LIST_OPTS_FUNC_NAME = "list_opts"
 
 
@@ -65,8 +64,8 @@ def _import_modules(module_names):
         mod = importlib.import_module("aprsd_slack_plugin.conf." + modname)
         if not hasattr(mod, LIST_OPTS_FUNC_NAME):
             msg = (
-                "The module 'aprsd_slack_plugin.conf.%s' should have a '%s' "
-                "function which returns the config options." % (modname, LIST_OPTS_FUNC_NAME)
+                f"The module 'aprsd_slack_plugin.conf.{modname}' should have a "
+                f"'{LIST_OPTS_FUNC_NAME}' function which returns the config options."
             )
             raise Exception(msg)
         else:
diff --git a/aprsd_slack_plugin/conf/slack.py b/aprsd_slack_plugin/conf/slack.py
index 7c67813..3f2f079 100644
--- a/aprsd_slack_plugin/conf/slack.py
+++ b/aprsd_slack_plugin/conf/slack.py
@@ -1,6 +1,5 @@
 from oslo_config import cfg
 
-
 slack_group = cfg.OptGroup(
     name="aprsd_slack_plugin",
     title="APRSD Slack Plugin settings",
diff --git a/aprsd_slack_plugin/location_plugin.py b/aprsd_slack_plugin/location_plugin.py
index c17d1c3..aae608f 100644
--- a/aprsd_slack_plugin/location_plugin.py
+++ b/aprsd_slack_plugin/location_plugin.py
@@ -111,10 +111,7 @@ class SlackLocationPlugin(
         callsign_url = f"<http://aprs.fi/info/a/{searchcall}|{searchcall}>"
 
         aprs_url = (
-            "<http://aprs.fi/#!mt=roadmap&z=15&lat={}&lng={}| http://aprs.fi/>".format(
-                lat,
-                lon,
-            )
+            f"<http://aprs.fi/#!mt=roadmap&z=15&lat={lat}&lng={lon}| http://aprs.fi/>"
         )
 
         message = {}
diff --git a/aprsd_slack_plugin/notify_plugin.py b/aprsd_slack_plugin/notify_plugin.py
index 26c2797..1ef627e 100644
--- a/aprsd_slack_plugin/notify_plugin.py
+++ b/aprsd_slack_plugin/notify_plugin.py
@@ -4,9 +4,10 @@ from aprsd import packets, plugin
 from oslo_config import cfg
 
 import aprsd_slack_plugin
-from aprsd_slack_plugin import base_plugin
-from aprsd_slack_plugin import conf  # noqa
-
+from aprsd_slack_plugin import (
+    base_plugin,
+    conf,  # noqa
+)
 
 CONF = cfg.CONF
 LOG = logging.getLogger("APRSD")
diff --git a/pyproject.toml b/pyproject.toml
index 7859b69..9180f71 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,3 @@
-[build-system]
-requires = ["setuptools>=46.0", "wheel"]
-build-backend = "setuptools.build_meta"
 
 [project]
 name = "aprsd_slack_plugin"
@@ -39,16 +36,14 @@ dev = [
     "pip-tools",
 ]
 
-[project.entry-points]
-"oslo.config.opts" = { "aprsd_slack_plugin.conf" = "aprsd_slack_plugin.conf.opts:list_opts" }
+[project.entry-points."oslo.config.opts"]
+"aprsd_slack_plugin.conf" = "aprsd_slack_plugin.conf.opts:list_opts"
 
 [tool.setuptools]
+py-modules = ["aprsd_slack_plugin"]
+package-data = {aprsd_slack_plugin = ["*.dat"]}
 packages = ["aprsd_slack_plugin"]
 
-[tool.setuptools.package-data]
-aprsd_slack_plugin = ["py.typed"]
-
-
 [tool.isort]
 profile = "black"
 line_length = 99
@@ -59,9 +54,62 @@ skip_gitignore = true
 # If you need to skip/exclude folders, consider using skip_glob as that will allow the
 # isort defaults for skip to remain without the need to duplicate them.
 
-[tool.coverage.run]
-branch = true
-
 [tool.mypy]
 ignore_missing_imports = true
 strict = true
+
+[build-system]
+requires = [
+    "setuptools>=80.0",
+    "setuptools_scm>=0",
+    "wheel",
+]
+build-backend = "setuptools.build_meta"
+
+[tool.ruff]
+line-length = 88
+target-version = "py311"
+
+[tool.ruff.lint]
+select = [
+    "E",   # pycodestyle errors
+    "W",   # pycodestyle warnings
+    "F",   # pyflakes
+    "I",   # isort
+    "B",   # flake8-bugbear
+    "C4",  # flake8-comprehensions
+    "UP",  # pyupgrade
+]
+ignore = [
+    "E501",  # line too long (handled by formatter)
+]
+
+[tool.ruff.lint.isort]
+force-sort-within-sections = true
+
+[tool.ruff.format]
+quote-style = "double"
+indent-style = "space"
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+addopts = [
+    "-ra",
+    "--strict-markers",
+    "--strict-config",
+    "--cov=aprsd_slack_plugin",
+    "--cov-report=term-missing",
+    "--cov-report=html",
+]
+
+[tool.coverage.run]
+branch = true
+source = ["aprsd_slack_plugin"]
+omit = [
+    "*/tests/*",
+    "*/test_*.py",
+]
+[tool.setuptools_scm]
diff --git a/tox.ini b/tox.ini
index b3675c8..7f4e618 100644
--- a/tox.ini
+++ b/tox.ini
@@ -23,6 +23,7 @@ isolated_build = true
 package = editable
 deps =
     pytest
+    pytest-cov
     aprsd
 commands =
     # Use -bb to enable BytesWarnings as error to catch str/bytes misuse.
@@ -45,6 +46,13 @@ deps =
 commands =
     uv run ruff check aprsd_slack_plugin tests
 
+[testenv:fmt]
+skip_install = true
+deps =
+    ruff
+commands =
+    uv run ruff format aprsd_slack_plugin tests
+
 [testenv:docs]
 package = editable
 deps =