diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index 0de69fc..0000000
--- a/.npmignore
+++ /dev/null
@@ -1,4 +0,0 @@
-*.sublime-*
-dist/*.zip
-img/
-test/
diff --git a/package.json b/package.json
index 4f3492c..98d5e8b 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,11 @@
     "type": "git",
     "url": "https://github.com/d3/d3-dsv.git"
   },
+  "files": [
+    "bin/*",
+    "dist/**/*.js",
+    "src/**/*.js"
+  ],
   "scripts": {
     "pretest": "rollup -c",
     "test": "TZ=America/Los_Angeles tape 'test/**/*-test.js' && eslint src test",