diff --git a/README.md b/README.md
index 9a8ba27..246abfb 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,6 @@
 ## Abao
+
+[![Greenkeeper badge](https://badges.greenkeeper.io/cybertk/abao.svg)](https://greenkeeper.io/)
 > RAML testing tool
 
 [![Gitter](https://badges.gitter.im/cybertk/abao.svg)](https://gitter.im/cybertk/abao?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
diff --git a/package.json b/package.json
index dec70cc..f93d769 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   },
   "homepage": "https://github.com/cybertk/abao",
   "devDependencies": {
-    "coveralls": "^2.11.14",
+    "coveralls": "^3.0.0",
     "express": "^4.12.0",
     "grunt": "0.4.0",
     "grunt-cli": "~1.2.0",
@@ -39,7 +39,7 @@
     "grunt-shell": "^2.0.0",
     "load-grunt-config": "^0.19.2",
     "mocha-phantom-coverage-reporter": "^0.1.0",
-    "mute": "^1.0.0",
+    "mute": "^2.0.6",
     "nock": "^9.0.0",
     "sinon": "2.4.1",
     "sinon-chai": "^2.7.0",
@@ -47,17 +47,17 @@
   },
   "dependencies": {
     "async": "^2.0.1",
-    "chai": "~3.5.0",
+    "chai": "~4.1.2",
     "coffee-errors": "^0.8.6",
     "coffee-script": "~1.12.1",
     "csonschema": "^0.5.1",
     "glob": "^7.0.6",
-    "mocha": "~3.4.2",
+    "mocha": "~5.0.1",
     "mustache": "~2.3.0",
-    "proxyquire": "^1.3.1",
+    "proxyquire": "^2.0.0",
     "raml-parser": "^0.8.16",
     "request": "^2.53.0",
-    "source-map-support": "^0.4.0",
+    "source-map-support": "^0.5.3",
     "tv4": "^1.2.7",
     "underscore": "^1.8.2",
     "lodash": "^4.16.4",