diff --git a/.npmignore b/.npmignore
deleted file mode 100644
index 5a5e2a4..0000000
--- a/.npmignore
+++ /dev/null
@@ -1,5 +0,0 @@
-/.travis.yml
-/package-lock.json
-/src
-/test
-/yarn.lock
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88f961e..ef8b00b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@
 * max_comment_size: new option
 * promise: new API module
 
+## Trunk
+
+* package: replace npm ignore with file field
+
 ## Version 4.4.1
 
 Fix:
diff --git a/package.json b/package.json
index 8a99949..6c55079 100644
--- a/package.json
+++ b/package.json
@@ -64,6 +64,9 @@
     "ts-node": "^8.0.3",
     "typescript": "^3.4.2"
   },
+  "files": [
+    "./lib"
+  ],
   "optionalDependencies": {},
   "main": "./lib",
   "scripts": {