diff --git a/README.md b/README.md
index 46af4cd..0360a8b 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@
 
 #SockBot Mafia
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/SockDrawer/sockMafia.svg)](https://greenkeeper.io/)
+
 Mafia plugin for [SockBot](https://sockbot.rtfd.org/en/latest/) version 3.1.1 or later.
 
 ## Command Reference
diff --git a/package.json b/package.json
index 9cd6b26..6ea441f 100644
--- a/package.json
+++ b/package.json
@@ -38,16 +38,16 @@
   },
   "devDependencies": {
     "chai": "^3.2.0",
-    "chai-as-promised": "^5.2.0",
+    "chai-as-promised": "^6.0.0",
     "chai-string": "^1.2.0",
     "coveralls": "^2.11.3",
     "del": "^2.2.0",
     "eslint": "^3.1.1",
     "istanbul": "^0.4.1",
-    "jsdoc-to-markdown": "^2.0.1",
-    "mocha": "^2.3.4",
-    "publish-please": "2.1.4",
-    "sinon": "^1.15.1",
+    "jsdoc-to-markdown": "^3.0.0",
+    "mocha": "^3.3.0",
+    "publish-please": "2.3.1",
+    "sinon": "^2.2.0",
     "sinon-as-promised": "^4.0.0",
     "sinon-chai": "^2.8.0"
   }