diff --git a/MANIFEST.in b/MANIFEST.in
index 15c6ca7..b7c319c 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1,3 @@
 include requirements.txt README.md LICENSE
+recursive-include clusopt_core *.h
+recursive-include clusopt_core *.hpp
\ No newline at end of file