diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index bbd12ca..0000000
--- a/.npmignore
+++ /dev/null
@@ -1,2 +0,0 @@
-tests/**
-sample/**
diff --git a/package.json b/package.json
index b2563e2..bb6d33c 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,9 @@
     "rich-text editor"
   ],
   "main": "./build/ckeditor.js",
+  "files": [
+    "build"
+  ],
   "devDependencies": {
     "@ckeditor/ckeditor5-autoformat": "^0.6.0",
     "@ckeditor/ckeditor5-basic-styles": "^0.9.0",