diff --git a/README.md b/README.md
index 1ea9da9..4921e83 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # bulk-decaffeinate
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/decaffeinate/bulk-decaffeinate.svg)](https://greenkeeper.io/)
+
 [![Build Status](https://travis-ci.org/alangpierce/bulk-decaffeinate.svg?branch=master)](https://travis-ci.org/alangpierce/bulk-decaffeinate)
 [![npm version](https://badge.fury.io/js/bulk-decaffeinate.svg)](https://www.npmjs.com/package/bulk-decaffeinate)
 [![MIT License](https://img.shields.io/npm/l/express.svg?maxAge=2592000)](LICENSE)
diff --git a/package.json b/package.json
index a4fbae9..9de266f 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "eslint-plugin-babel": "^4.0.0",
     "jscodeshift": "^0.3.28",
     "mocha": "^3.0.2",
-    "rollup": "^0.36.0",
+    "rollup": "^0.41.4",
     "rollup-plugin-babel": "^2.6.1",
     "rollup-plugin-json": "^2.0.1",
     "semantic-release": "^6.3.2"