diff --git a/python/MANIFEST.in b/python/MANIFEST.in
index 6c93d64..9e1fea7 100644
--- a/python/MANIFEST.in
+++ b/python/MANIFEST.in
@@ -8,3 +8,4 @@ prune fbprophet/stan_model
 
 # Necessary for tests to run
 include fbprophet/tests/*.csv
+include fbprophet/tests/*.json