diff --git a/MANIFEST.in b/MANIFEST.in
index da9003e0..eb206244 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,5 @@
 include README.md
-recursive-include kliff *.hpp
+recursive-include kliff *.hpp *.h
 recursive-include tests *.py *.xyz
 recursive-include utils *.py
 recursive-include examples *.py README.txt Si_training_set.tar.gz