diff --git a/MANIFEST.in b/MANIFEST.in
index 9b73c23..824b00d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,8 @@
 include license_tools/py.typed
+include tests/files/*.otf
 include tests/files/*.ttf
 include tests/files/*.woff
 include tests/files/*.woff2
 include tests/files/*.txt
 include tests/files/*.md
+include tests/*/*.py