diff --git a/experimental/babel-preset-env/.npmignore b/experimental/babel-preset-env/.npmignore
index c39639eadc..4dd6ca6d94 100644
--- a/experimental/babel-preset-env/.npmignore
+++ b/experimental/babel-preset-env/.npmignore
@@ -4,4 +4,6 @@ node_modules
 scripts
 .eslintignore
 .travis.yml
+codecov.yml
+data/*.js
 yarn.lock