diff --git a/MANIFEST.in b/MANIFEST.in
index 1aba38f..fbcdf24 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1,6 @@
 include LICENSE
+include pyproject.toml
+include tox.ini
+include tests/*.py
+include tests/tox.ini
+prune tests/.tox