diff --git a/MANIFEST.in b/MANIFEST.in
index 5cb7382bf9..7375aea935 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -7,5 +7,5 @@ recursive-exclude * __pycache__
 recursive-exclude * *.py[co]
 
 recursive-include ethpm/assets/ *
-recursive-include ethpm/ethpm-spec/examples *.json
-recursive-include ethpm/ethpm-spec/spec *.json
+recursive-include ethpm/ethpm-spec/examples *
+recursive-include ethpm/ethpm-spec/spec *