diff --git a/apis/python/MANIFEST.in b/apis/python/MANIFEST.in
index 9a890fe0d5..e8b8779dd8 100644
--- a/apis/python/MANIFEST.in
+++ b/apis/python/MANIFEST.in
@@ -3,3 +3,4 @@ include src/tiledbsoma/*.cc
 include src/tiledbsoma/*.h
 graft dist_links
 prune dist_links/libtiledbsoma/test/__pycache__
+include requirements_dev.txt