diff --git a/lib/py/Makefile.am b/lib/py/Makefile.am
index fd9ce25..5861858 100644
--- a/lib/py/Makefile.am
+++ b/lib/py/Makefile.am
@@ -49,6 +49,7 @@
 
 EXTRA_DIST = \
 	CMakeLists.txt \
+	MANIFEST.in \
 	coding_standards.md \
 	compat \
 	setup.py \