diff --git a/MANIFEST.in b/MANIFEST.in
index 3d9555541fa..0c750ec9d25 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,3 @@
 include *.rst *.md LICENSE
 recursive-include blib2to3 *.txt *.py
-recursive-include tests *.txt *.out *.diff *.py
+recursive-include tests *.txt *.out *.diff *.py *.pyi