diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index 6bcd27ba..00000000
--- a/.npmignore
+++ /dev/null
@@ -1,16 +0,0 @@
-build
-node_modules
-coverage
-.editorconfig
-.gitattributes
-.gitignore
-test
-.travis.yml
-appveyor.yml
-mkdocs.yml
-docs/css/
-vendor
-.prebuildrc
-.nyc_output
-.github/
-.vscode/
diff --git a/package.json b/package.json
index af740ae9..a6495a64 100644
--- a/package.json
+++ b/package.json
@@ -76,6 +76,14 @@
     "docs": "for m in constructor input resize composite operation colour channel output utility; do documentation build --shallow --format=md --markdown-toc=false lib/$m.js >docs/api-$m.md; done"
   },
   "main": "lib/index.js",
+  "files": [
+    "binding.gyp",
+    "docs/**",
+    "!docs/css/**",
+    "install/**",
+    "lib/**",
+    "src/**"
+  ],
   "repository": {
     "type": "git",
     "url": "git://github.com/lovell/sharp"