diff --git a/README.md b/README.md
index 7da08bf..f298575 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,7 @@
 # save-static [![NPM version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Dependency Status][daviddm-image]][daviddm-url]
+
+[![Greenkeeper badge](https://badges.greenkeeper.io/busterc/save-static.svg)](https://greenkeeper.io/)
+
 > Save Express responses to a static directory for disk caching
 
 Use save-static as a callback on Express [`Application.render()`](http://expressjs.com/4x/api.html#app.render) or [`Response.render()`](http://expressjs.com/4x/api.html#res.render) and it will:
diff --git a/package.json b/package.json
index 3388fe1..bf31a98 100644
--- a/package.json
+++ b/package.json
@@ -27,18 +27,18 @@
   ],
   "repository": "busterc/save-static",
   "devDependencies": {
-    "babel-core": "^5.5.0",
-    "del": "^2.0.2",
+    "babel-core": "^6.26.3",
+    "del": "^3.0.0",
     "express": "^4.13.3",
     "gulp": "^3.6.0",
-    "gulp-babel": "^5.1.0",
-    "gulp-eslint": "^1.0.0",
+    "gulp-babel": "^7.0.1",
+    "gulp-eslint": "^5.0.0",
     "gulp-exclude-gitignore": "^1.0.0",
-    "gulp-istanbul": "^0.9.0",
-    "gulp-mocha": "^2.0.0",
-    "gulp-nsp": "^2.1.0",
+    "gulp-istanbul": "^1.1.3",
+    "gulp-mocha": "^6.0.0",
+    "gulp-nsp": "^3.0.1",
     "gulp-plumber": "^1.0.0",
-    "isparta": "^3.0.3",
+    "isparta": "^4.1.0",
     "jade": "^1.11.0",
     "request": "^2.65.0"
   },