diff --git a/MANIFEST.in b/MANIFEST.in
index 321b65e6d..6539f496d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,5 +3,5 @@ recursive-include av *.pyx *.pxd
 recursive-include docs *.rst *.py
 recursive-include examples *.py
 recursive-include include *.pxd *.h
-recursive-include src/av *.c
+recursive-include src/av *.c *.h
 recursive-include tests *.py