diff --git a/MANIFEST.in b/MANIFEST.in
index 0355770..92655ac 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,2 +1,3 @@
 include LICENCE.txt
-recursive-include test *.py
+graft test
+prune **/__pycache__
diff --git a/README.rst b/README.rst
index 0970a68..b766b03 100644
--- a/README.rst
+++ b/README.rst
@@ -1,5 +1,3 @@
-.. image:: https://travis-ci.org/todofixthis/class-registry.svg?branch=master
-   :target: https://travis-ci.org/todofixthis/class-registry
 .. image:: https://readthedocs.org/projects/class-registry/badge/?version=latest
    :target: http://class-registry.readthedocs.io/
 
@@ -74,8 +72,10 @@ ClassRegistry is known to be compatible with the following Python versions:
 - 3.9
 
 .. note::
-   ClassRegistry's code is pretty simple, so it's likely to be compatible with
-   versions not listed here; there's just no test coverage to prove it 😇
+   I'm only one person, so to keep from getting overwhelmed, I'm only committing
+   to supporting the 3 most recent versions of Python.  ClassRegistry's code is
+   pretty simple, so it's likely to be compatible with versions not listed here;
+   there just won't be any test coverage to prove it 😇
 
 Installation
 ------------
@@ -87,7 +87,8 @@ Install the latest stable version via pip::
 .. important::
    Make sure to install `phx-class-registry`, **not** `class-registry`.  I
    created the latter at a previous job years ago, and after I left they never
-   touched that project again — so in the end I had to fork it 🤷
+   touched that project again and stopped responding to my emails — so in the
+   end I had to fork it 🤷
 
 Running Unit Tests
 ------------------
@@ -95,7 +96,11 @@ Install the package with the ``test-runner`` extra to set up the necessary
 dependencies, and then you can run the tests with the ``tox`` command::
 
    pip install -e .[test-runner]
-   tox -p all
+   tox -p
+
+To run tests in the current virtualenv::
+
+   python -m unittest
 
 Documentation
 -------------
diff --git a/pyproject.toml b/pyproject.toml
index 47f786c..076eccb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,7 +2,7 @@
 
 [project]
 name = "phx-class-registry"
-version = "4.0.4"
+version = "4.0.5"
 description = "Factory+Registry pattern for Python classes"
 readme = "README.rst"
 requires-python = ">= 3"
@@ -35,4 +35,5 @@ classifiers = [
 [project.urls]
 Documentation = "https://class-registry.readthedocs.io/"
 Changelog = "https://github.com/todofixthis/class-registry/releases"
+Issues = "https://github.com/todofixthis/class-registry/issues"
 Repository = "https://github.com/todofixthis/class-registry"
diff --git a/test/auto_register_test.py b/test/test_auto_register.py
similarity index 100%
rename from test/auto_register_test.py
rename to test/test_auto_register.py
diff --git a/test/cache_test.py b/test/test_cache.py
similarity index 100%
rename from test/cache_test.py
rename to test/test_cache.py
diff --git a/test/entry_points_test.py b/test/test_entry_points.py
similarity index 100%
rename from test/entry_points_test.py
rename to test/test_entry_points.py
diff --git a/test/patcher_test.py b/test/test_patcher.py
similarity index 100%
rename from test/patcher_test.py
rename to test/test_patcher.py
diff --git a/test/registry_test.py b/test/test_registry.py
similarity index 100%
rename from test/registry_test.py
rename to test/test_registry.py
diff --git a/tox.ini b/tox.ini
index 428abf2..aefb8bb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,2 +1,5 @@
 [tox]
 envlist = py3{11,10,9}
+
+[testenv]
+commands = python -m unittest