diff --git a/.npmignore b/.npmignore
new file mode 100644
index 0000000..85de9cf
--- /dev/null
+++ b/.npmignore
@@ -0,0 +1 @@
+src
diff --git a/package.json b/package.json
index ea6a859..2efda9d 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,8 @@
   "scripts": {
     "build": "npm run lint && babel src -d lib --ignore \"**/*.test.js\" ",
     "lint": "standard",
-    "test": "jest --watch"
+    "test": "jest --watch",
+    "prepublish": "npm run build"
   },
   "repository": {
     "type" : "git",