diff --git a/MANIFEST.in b/MANIFEST.in
index 4cf3d01..a4d0cbc 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -6,3 +6,7 @@ prune *.pyc
 recursive-include docs *.rst *.py
 recursive-include tests *.py
 prune docs/_build
+include tox.ini
+include dev-requirements.txt
+include .coveragerc
+include docs/source/requirements.txt
diff --git a/docs/source/release-notes/unreleased.rst b/docs/source/release-notes/unreleased.rst
index 09b03b4..024515e 100644
--- a/docs/source/release-notes/unreleased.rst
+++ b/docs/source/release-notes/unreleased.rst
@@ -1,6 +1,7 @@
 2.x.y - 202z-aa-bb
 ------------------
 
-- *Add Items here*
+- Include the tox configuration and its test, coverage, and documentation
+  requirements in source distributions for downstream testing.
 
 .. links below here