diff --git a/README.md b/README.md
index 2b26373..d9cff6c 100644
--- a/README.md
+++ b/README.md
@@ -1,15 +1,16 @@
 # level-ws
 
-> A basic WriteStream implementation for [levelup](https://github.com/level/levelup)
-
-[![level badge][level-badge]](https://github.com/level/awesome)
-[![npm](https://img.shields.io/npm/v/level-ws.svg)](https://www.npmjs.com/package/level-ws)
-![Node version](https://img.shields.io/node/v/level-ws.svg)
-[![Build Status](https://img.shields.io/travis/Level/level-ws.svg)](http://travis-ci.org/Level/level-ws)
-[![dependencies](https://david-dm.org/Level/level-ws.svg)](https://david-dm.org/level/level-ws)
-[![npm](https://img.shields.io/npm/dm/level-ws.svg)](https://www.npmjs.com/package/level-ws)
+> A basic WriteStream implementation for [levelup](https://github.com/Level/levelup)
+
+[![level badge][level-badge]](https://github.com/Level/awesome)
+[![npm](https://img.shields.io/npm/v/level-ws.svg?label=&logo=npm)](https://www.npmjs.com/package/level-ws)
+[![Node version](https://img.shields.io/node/v/level-ws.svg)](https://www.npmjs.com/package/level-ws)
+[![Travis](https://img.shields.io/travis/Level/level-ws.svg?logo=travis&label=)](https://travis-ci.org/Level/level-ws)
+[![npm](https://img.shields.io/npm/dm/level-ws.svg?label=dl)](https://www.npmjs.com/package/level-ws)
 [![Coverage Status](https://coveralls.io/repos/github/Level/level-ws/badge.svg)](https://coveralls.io/github/Level/level-ws)
 [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
+[![Backers on Open Collective](https://opencollective.com/level/backers/badge.svg?color=orange)](#backers)
+[![Sponsors on Open Collective](https://opencollective.com/level/sponsors/badge.svg?color=orange)](#sponsors)
 
 `level-ws` provides the most basic general-case WriteStream for `levelup`. It was extracted from the core `levelup` at version 0.18.0.
 
@@ -116,6 +117,18 @@ ws.end()
 
 See the [Contribution Guide](https://github.com/Level/community/blob/master/CONTRIBUTING.md) for more details.
 
+## Donate
+
+To sustain [`Level`](https://github.com/Level) and its activities, become a backer or sponsor on [Open Collective](https://opencollective.com/level). Your logo or avatar will be displayed on our 28+ [GitHub repositories](https://github.com/Level), [npm](https://www.npmjs.com/) packages and (soon) [our website](http://leveldb.org). 💖
+
+### Backers
+
+[![Open Collective backers](https://opencollective.com/level/backers.svg?width=890)](https://opencollective.com/level)
+
+### Sponsors
+
+[![Open Collective sponsors](https://opencollective.com/level/sponsors.svg?width=890)](https://opencollective.com/level)
+
 ## License
 
 [MIT](LICENSE.md) © 2012-present [Contributors](CONTRIBUTORS.md).
diff --git a/package.json b/package.json
index 9069e56..9ced961 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,9 @@
   "scripts": {
     "test": "standard && hallmark && nyc node test.js",
     "coverage": "nyc report --reporter=text-lcov | coveralls",
-    "hallmark": "hallmark --fix"
+    "hallmark": "hallmark --fix",
+    "dependency-check": "dependency-check . test.js",
+    "prepublishOnly": "npm run dependency-check"
   },
   "dependencies": {
     "inherits": "^2.0.3",
@@ -15,13 +17,14 @@
     "xtend": "^4.0.1"
   },
   "devDependencies": {
-    "coveralls": "~3.0.1",
+    "coveralls": "^3.0.1",
+    "dependency-check": "^3.3.0",
     "hallmark": "^0.1.0",
     "level": "^4.0.0",
     "level-community": "^3.0.0",
     "level-concat-iterator": "^2.0.0",
-    "nyc": "~12.0.2",
-    "secret-event-listener": "~1.0.0",
+    "nyc": "^12.0.2",
+    "secret-event-listener": "^1.0.0",
     "standard": "^12.0.0",
     "tape": "^4.9.0",
     "tempy": "^0.2.1"