diff --git a/.gitignore b/.gitignore
index 77530b75..77e8f70b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,7 +2,6 @@
 .nyc_output/
 /node_modules/
 /tmp/
-/lib/
 /dist/
 /config/dist/
 /coverage/
diff --git a/package.json b/package.json
index f8603121..bf464cc4 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "stellar-base",
   "version": "8.2.2",
   "description": "Low-level support library for the Stellar network.",
-  "main": "./src/index.js",
+  "main": "./lib/index.js",
   "types": "./types/index.d.ts",
   "scripts": {
     "build": "yarn build:node",
@@ -20,6 +20,7 @@
     "tslint": "dtslint --localTs node_modules/typescript/lib types/",
     "preversion": "yarn clean && yarn pretty && yarn build:all:prod && yarn test:all",
     "pretty": "prettier --config ./config/prettier.config.js --ignore-path ./config/.prettierignore --write './**/*.js'",
+    "prepare": "yarn build:all:prod",
     "clean": "rm -rf lib/ dist/ coverage/ .nyc_output/"
   },
   "mocha": {
diff --git a/src/index.js b/src/index.mjs
similarity index 100%
rename from src/index.js
rename to src/index.mjs