diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index de6a71dc..00000000
--- a/.npmignore
+++ /dev/null
@@ -1,9 +0,0 @@
-.gitignore
-.babelrc
-.editorconfig
-.flowconfig
-.travis.yml
-test.js
-CHANGELOG.md
-rollup.config.js
-yarn.lock
diff --git a/package.json b/package.json
index 85ea4932..ec67f730 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,11 @@
     "test": "mocha lib/tests.cjs.js",
     "prepublish": "npm run build"
   },
+  "files": [
+    "lib/",
+    "loader.js",
+    "main.js"
+  ],
   "repository": {
     "type": "git",
     "url": "git+https://github.com/apollographql/graphql-tag.git"