diff --git a/package.json b/package.json
index 2db41b6..40ec109 100644
--- a/package.json
+++ b/package.json
@@ -27,10 +27,10 @@
   "homepage": "https://github.com/charliekenney23/query-str#readme",
   "devDependencies": {
     "chai": "^4.0.2",
-    "codecov": "^2.2.0",
-    "eslint": "^4.1.1",
-    "eslint-config-airbnb": "^15.0.1",
+    "codecov": "^3.5.0",
+    "eslint": "^5.16.0",
+    "eslint-config-airbnb": "^17.1.0",
     "istanbul": "^0.4.5",
-    "mocha": "^3.4.2"
+    "mocha": "^6.1.4"
   }
 }
diff --git a/readme.md b/readme.md
index 07c3975..651bc64 100644
--- a/readme.md
+++ b/readme.md
@@ -9,6 +9,9 @@
 <p align="center">Parse and stringify URL query strings with ease. 🚀</p>
 
 ## Installation ⬇️
+
+[![Greenkeeper badge](https://badges.greenkeeper.io/Charliekenney23/query-str.svg)](https://greenkeeper.io/)
+
 ```bash
 $ npm install --save query-str
 ```