diff --git a/MANIFEST.in b/MANIFEST.in
index 39657fc..46e5b5f 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -2,4 +2,4 @@ exclude *.py *.txt
 include setup.py bench.py test.py
 include MANIFEST.in LICENSE.txt README.rst
 include testall.sh
-recursive-include acora *.py *.pyx *.pxd *.c
+recursive-include acora *.py *.pyx *.pxd *.c *.h