diff --git a/MANIFEST.IN b/MANIFEST.in
similarity index 82%
rename from MANIFEST.IN
rename to MANIFEST.in
index ea003f2..921626d 100644
--- a/MANIFEST.IN
+++ b/MANIFEST.in
@@ -2,3 +2,4 @@ include README.rst LICENSE HISTORY.txt AUTHORS.txt
 include mwdust/util/extCurves/extinction.tbl
 include mwdust/util/extCurves/apj398709t6_ascii.txt
 include mwdust/util/SFD_CodeC/*.h
+include mwdust/util/healpix_CodeC/*.h