diff --git a/MANIFEST.in b/MANIFEST.in
index 7e1e187019..d940e60f3e 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,9 @@
 include LICENSE
 
 include etc/requirements*.txt
+recursive-include zipline *.pyi
+recursive-include zipline *.pxi
+
 recursive-include zipline/resources *.*
 include versioneer.py
 include zipline/_version.py