diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3e20ae63..bc924510 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -2,6 +2,36 @@ name: tests
 
 on: [push, pull_request]
 
+env:
+  # Environment variables to support color support (jaraco/skeleton#66):
+  # Request colored output from CLI tools supporting it. Different tools
+  # interpret the value differently. For some, just being set is sufficient.
+  # For others, it must be a non-zero integer. For yet others, being set
+  # to a non-empty value is sufficient.
+  FORCE_COLOR: -106
+  # MyPy's color enforcement (must be a non-zero number)
+  MYPY_FORCE_COLOR: -42
+  # Recognized by the `py` package, dependency of `pytest` (must be "1")
+  PY_COLORS: 1
+  # Make tox-wrapped tools see color requests
+  TOX_TESTENV_PASSENV: >-
+    FORCE_COLOR
+    MYPY_FORCE_COLOR
+    NO_COLOR
+    PY_COLORS
+    PYTEST_THEME
+    PYTEST_THEME_MODE
+
+  # Suppress noisy pip warnings
+  PIP_DISABLE_PIP_VERSION_CHECK: 'true'
+  PIP_NO_PYTHON_VERSION_WARNING: 'true'
+  PIP_NO_WARN_SCRIPT_LOCATION: 'true'
+
+  # Disable the spinner, noise in GHA; TODO(webknjaz): Fix this upstream
+  # Must be "1".
+  TOX_PARALLEL_NO_SPINNER: 1
+
+
 jobs:
   test:
     strategy:
diff --git a/.readthedocs.yml b/.readthedocs.yaml
similarity index 100%
rename from .readthedocs.yml
rename to .readthedocs.yaml
diff --git a/README.rst b/README.rst
index e2cee859..2df4135d 100644
--- a/README.rst
+++ b/README.rst
@@ -1,10 +1,7 @@
 .. image:: https://img.shields.io/pypi/v/importlib_metadata.svg
-   :target: `PyPI link`_
+   :target: https://pypi.org/project/importlib_metadata
 
 .. image:: https://img.shields.io/pypi/pyversions/importlib_metadata.svg
-   :target: `PyPI link`_
-
-.. _PyPI link: https://pypi.org/project/importlib_metadata
 
 .. image:: https://github.com/python/importlib_metadata/workflows/tests/badge.svg
    :target: https://github.com/python/importlib_metadata/actions?query=workflow%3A%22tests%22
diff --git a/mypy.ini b/mypy.ini
index 976ba029..b6f97276 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -1,2 +1,5 @@
 [mypy]
 ignore_missing_imports = True
+# required to support namespace packages
+# https://github.com/python/mypy/issues/14057
+explicit_package_bases = True