diff --git a/dockertidy/Autostop.py b/dockertidy/autostop.py
similarity index 96%
rename from dockertidy/Autostop.py
rename to dockertidy/autostop.py
index 2bbcbc7..9eec3d6 100644
--- a/dockertidy/Autostop.py
+++ b/dockertidy/autostop.py
@@ -6,9 +6,9 @@ import docker.errors
 import requests.exceptions
 
 import docker
-from dockertidy.Config import SingleConfig
-from dockertidy.Logger import SingleLog
-from dockertidy.Parser import timedelta
+from dockertidy.config import SingleConfig
+from dockertidy.logger import SingleLog
+from dockertidy.parser import timedelta
 
 
 class AutoStop:
diff --git a/dockertidy/Cli.py b/dockertidy/cli.py
similarity index 93%
rename from dockertidy/Cli.py
rename to dockertidy/cli.py
index 95823c2..126c02f 100644
--- a/dockertidy/Cli.py
+++ b/dockertidy/cli.py
@@ -3,13 +3,13 @@
 
 import argparse
 
-import dockertidy.Exception
+import dockertidy.exception
 from dockertidy import __version__
-from dockertidy.Autostop import AutoStop
-from dockertidy.Config import SingleConfig
-from dockertidy.GarbageCollector import GarbageCollector
-from dockertidy.Logger import SingleLog
-from dockertidy.Parser import timedelta_validator
+from dockertidy.autostop import AutoStop
+from dockertidy.config import SingleConfig
+from dockertidy.garbage_collector import GarbageCollector
+from dockertidy.logger import SingleLog
+from dockertidy.parser import timedelta_validator
 
 
 class DockerTidy:
@@ -124,7 +124,7 @@ class DockerTidy:
     def _get_config(self):
         try:
             config = SingleConfig(args=self.args)
-        except dockertidy.Exception.ConfigError as e:
+        except dockertidy.exception.ConfigError as e:
             self.log.sysexit_with_message(e)
 
         try:
diff --git a/dockertidy/Config.py b/dockertidy/config.py
similarity index 95%
rename from dockertidy/Config.py
rename to dockertidy/config.py
index c14dc28..d3f45a8 100644
--- a/dockertidy/Config.py
+++ b/dockertidy/config.py
@@ -10,11 +10,11 @@ import ruamel.yaml
 from appdirs import AppDirs
 from jsonschema._utils import format_as_index
 
-import dockertidy.Exception
-import dockertidy.Parser
-from dockertidy.Parser import env
-from dockertidy.Utils import Singleton
-from dockertidy.Utils import dict_intersect
+import dockertidy.exception
+import dockertidy.parser
+from dockertidy.parser import env
+from dockertidy.utils import Singleton
+from dockertidy.utils import dict_intersect
 
 config_dir = AppDirs("docker-tidy").user_config_dir
 default_config_file = os.path.join(config_dir, "config.yml")
@@ -162,7 +162,7 @@ class Config():
                     if '"{}" not set'.format(envname) in str(e):
                         pass
                     else:
-                        raise dockertidy.Exception.ConfigError(
+                        raise dockertidy.exception.ConfigError(
                             "Unable to read environment variable", str(e)
                         )
 
@@ -194,7 +194,7 @@ class Config():
                     normalized = ruamel.yaml.safe_load(s)
                 except (ruamel.yaml.composer.ComposerError, ruamel.yaml.scanner.ScannerError) as e:
                     message = "{} {}".format(e.context, e.problem)
-                    raise dockertidy.Exception.ConfigError(
+                    raise dockertidy.exception.ConfigError(
                         "Unable to read config file {}".format(config), message
                     )
 
@@ -236,7 +236,7 @@ class Config():
                 schema=format_as_index(list(e.relative_schema_path)[:-1]),
                 message=e.message
             )
-            raise dockertidy.Exception.ConfigError("Configuration error", schema_error)
+            raise dockertidy.exception.ConfigError("Configuration error", schema_error)
 
         return True
 
diff --git a/dockertidy/Exception.py b/dockertidy/exception.py
similarity index 100%
rename from dockertidy/Exception.py
rename to dockertidy/exception.py
diff --git a/dockertidy/GarbageCollector.py b/dockertidy/garbage_collector.py
similarity index 98%
rename from dockertidy/GarbageCollector.py
rename to dockertidy/garbage_collector.py
index 115a973..3b73981 100644
--- a/dockertidy/GarbageCollector.py
+++ b/dockertidy/garbage_collector.py
@@ -9,9 +9,9 @@ import docker.errors
 import requests.exceptions
 
 import docker
-from dockertidy.Config import SingleConfig
-from dockertidy.Logger import SingleLog
-from dockertidy.Parser import timedelta
+from dockertidy.config import SingleConfig
+from dockertidy.logger import SingleLog
+from dockertidy.parser import timedelta
 
 
 class GarbageCollector:
diff --git a/dockertidy/Logger.py b/dockertidy/logger.py
similarity index 98%
rename from dockertidy/Logger.py
rename to dockertidy/logger.py
index 3f019e8..389a9a7 100644
--- a/dockertidy/Logger.py
+++ b/dockertidy/logger.py
@@ -8,8 +8,8 @@ import sys
 import colorama
 from pythonjsonlogger import jsonlogger
 
-from dockertidy.Utils import Singleton
-from dockertidy.Utils import to_bool
+from dockertidy.utils import Singleton
+from dockertidy.utils import to_bool
 
 CONSOLE_FORMAT = "{}[%(levelname)s]{} %(message)s"
 JSON_FORMAT = "(asctime) (levelname) (message)"
diff --git a/dockertidy/Parser.py b/dockertidy/parser.py
similarity index 100%
rename from dockertidy/Parser.py
rename to dockertidy/parser.py
diff --git a/dockertidy/test/unit/test_autostop.py b/dockertidy/test/unit/test_autostop.py
index 244b3c6..12a0d5b 100644
--- a/dockertidy/test/unit/test_autostop.py
+++ b/dockertidy/test/unit/test_autostop.py
@@ -3,7 +3,7 @@
 import pytest
 
 import docker
-from dockertidy import Autostop
+from dockertidy import autostop
 
 pytest_plugins = [
     "dockertidy.test.fixtures.fixtures",
@@ -11,28 +11,28 @@ pytest_plugins = [
 
 
 @pytest.fixture
-def autostop(mocker):
+def autostop_fixture(mocker):
     mocker.patch.object(
-        Autostop.AutoStop,
+        autostop.AutoStop,
         "_get_docker_client",
         return_value=mocker.create_autospec(docker.APIClient)
     )
 
-    stop = Autostop.AutoStop()
+    stop = autostop.AutoStop()
     return stop
 
 
-def test_stop_container(autostop, mocker):
+def test_stop_container(autostop_fixture, mocker):
     client = mocker.create_autospec(docker.APIClient)
     cid = "asdb"
 
-    autostop._stop_container(client, cid)
+    autostop_fixture._stop_container(client, cid)
     client.stop.assert_called_once_with(cid)
 
 
-def test_build_container_matcher(autostop, mocker):
+def test_build_container_matcher(autostop_fixture, mocker):
     prefixes = ["one_", "two_"]
-    matcher = autostop._build_container_matcher(prefixes)
+    matcher = autostop_fixture._build_container_matcher(prefixes)
 
     assert matcher("one_container")
     assert matcher("two_container")
@@ -40,9 +40,9 @@ def test_build_container_matcher(autostop, mocker):
     assert not matcher("one")
 
 
-def test_has_been_running_since_true(autostop, container, later_time):
-    assert autostop._has_been_running_since(container, later_time)
+def test_has_been_running_since_true(autostop_fixture, container, later_time):
+    assert autostop_fixture._has_been_running_since(container, later_time)
 
 
-def test_has_been_running_since_false(autostop, container, earlier_time):
-    assert not autostop._has_been_running_since(container, earlier_time)
+def test_has_been_running_since_false(autostop_fixture, container, earlier_time):
+    assert not autostop_fixture._has_been_running_since(container, earlier_time)
diff --git a/dockertidy/test/unit/test_garbagecollector.py b/dockertidy/test/unit/test_garbagecollector.py
index 6b9c922..6efa0b9 100644
--- a/dockertidy/test/unit/test_garbagecollector.py
+++ b/dockertidy/test/unit/test_garbagecollector.py
@@ -4,7 +4,7 @@ import pytest
 import requests
 
 import docker
-from dockertidy import GarbageCollector
+from dockertidy import garbage_collector
 
 pytest_plugins = [
     "dockertidy.test.fixtures.fixtures",
@@ -14,12 +14,12 @@ pytest_plugins = [
 @pytest.fixture
 def gc(mocker):
     mocker.patch.object(
-        GarbageCollector.GarbageCollector,
+        garbage_collector.GarbageCollector,
         "_get_docker_client",
         return_value=mocker.create_autospec(docker.APIClient)
     )
 
-    gc = GarbageCollector.GarbageCollector()
+    gc = garbage_collector.GarbageCollector()
     return gc
 
 
diff --git a/dockertidy/Utils.py b/dockertidy/utils.py
similarity index 100%
rename from dockertidy/Utils.py
rename to dockertidy/utils.py
diff --git a/poetry.lock b/poetry.lock
index e8a6536..f1f8271 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -362,7 +362,7 @@ python-versions = "*"
 
 [[package]]
 name = "isort"
-version = "5.6.4"
+version = "5.7.0"
 description = "A Python utility / library to sort Python imports."
 category = "dev"
 optional = false
@@ -976,8 +976,8 @@ ipaddress = [
     {file = "ipaddress-1.0.23.tar.gz", hash = "sha256:b7f8e0369580bb4a24d5ba1d7cc29660a4a6987763faf1d8a8046830e020e7e2"},
 ]
 isort = [
-    {file = "isort-5.6.4-py3-none-any.whl", hash = "sha256:dcab1d98b469a12a1a624ead220584391648790275560e1a43e54c5dceae65e7"},
-    {file = "isort-5.6.4.tar.gz", hash = "sha256:dcaeec1b5f0eca77faea2a35ab790b4f3680ff75590bfcb7145986905aab2f58"},
+    {file = "isort-5.7.0-py3-none-any.whl", hash = "sha256:fff4f0c04e1825522ce6949973e83110a6e907750cd92d128b0d14aaaadbffdc"},
+    {file = "isort-5.7.0.tar.gz", hash = "sha256:c729845434366216d320e936b8ad6f9d681aab72dc7cbc2d51bedc3582f3ad1e"},
 ]
 jsonschema = [
     {file = "jsonschema-3.2.0-py2.py3-none-any.whl", hash = "sha256:4e5b3cf8216f577bee9ce139cbe72eca3ea4f292ec60928ff24758ce626cd163"},
diff --git a/pyproject.toml b/pyproject.toml
index 0ef00a7..f25fdcc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -77,7 +77,7 @@ pytest-mock = "^3.3.1"
 yapf = "^0.30.0"
 
 [tool.poetry.scripts]
-docker-tidy = "dockertidy.Cli:main"
+docker-tidy = "dockertidy.cli:main"
 
 [tool.poetry-dynamic-versioning]
 enable = true
@@ -92,7 +92,7 @@ sections = ["FUTURE", "STDLIB", "THIRDPARTY", "FIRSTPARTY", "LOCALFOLDER"]
 skip_glob = ["**/.env*", "**/env/*", "**/docs/*"]
 
 [tool.pytest.ini_options]
-addopts = "--cov=dockertidy --cov-report xml:coverage.xml --cov-append --no-cov-on-fail"
+addopts = "dockertidy --cov=dockertidy --cov-report=xml:coverage.xml --cov-report=term --cov-append --no-cov-on-fail"
 filterwarnings = [
   "ignore::FutureWarning",
   "ignore:.*collections.*:DeprecationWarning",