diff --git a/MANIFEST.in b/MANIFEST.in
index b19e207..e90b104 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,10 @@
 include *.rst
 include requirements-*.txt
 include tox.ini
+recursive-include tests *
+prune tests/__pycache__
 recursive-include doc *
 prune doc/locale
 prune doc/_build
+prune .devcontainer
+prune .github