diff --git a/package.json b/package.json
index 600b1d4..f05d25d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "iab-vast-loader",
-  "version": "0.6.1",
+  "version": "0.6.2",
   "description": "Loads and parses IAB VAST tags, resolving wrapped tags along the way.",
   "main": "index.js",
   "jsnext:main": "src/index.js",
@@ -33,15 +33,16 @@
   },
   "devDependencies": {
     "babel-plugin-transform-builtin-extend": "^1.1.0",
-    "babel-plugin-transform-runtime": "^6.22.0",
+    "babel-plugin-transform-runtime": "^6.23.0",
     "babel-preset-env": "^1.1.8",
-    "babel-register": "^6.22.0",
-    "babel-runtime": "^6.22.0",
+    "babel-register": "^6.24.0",
+    "babel-runtime": "^6.23.0",
     "chai": "^3.5.0",
     "chai-as-promised": "^6.0.0",
     "core-js": "^2.4.0",
     "del": "^2.2.0",
-    "express": "^4.14.1",
+    "dirty-chai": "^1.2.2",
+    "express": "^4.15.2",
     "fs-promise": "^2.0.0",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
@@ -50,16 +51,16 @@
     "gulp-istanbul": "^1.0.0",
     "gulp-load-plugins": "^1.5.0",
     "gulp-mocha": "^3.0.0",
-    "gulp-sourcemaps": "^2.4.0",
-    "gulp-standard": "^8.0.3",
+    "gulp-sourcemaps": "^2.4.1",
+    "gulp-standard": "^9.0.0",
     "in-publish": "^2.0.0",
     "isparta": "^4.0.0",
     "mocha-junit-reporter": "^1.13.0",
     "run-sequence": "^1.1.5",
     "sinon": "^1.17.7",
     "sinon-chai": "^2.8.0",
-    "standard": "^8.6.0",
-    "yargs": "^6.6.0"
+    "standard": "^9.0.1",
+    "yargs": "^7.0.2"
   },
   "standard": {
     "globals": [
diff --git a/test/lib/setup.js b/test/lib/setup.js
index 800797b..6d655f1 100644
--- a/test/lib/setup.js
+++ b/test/lib/setup.js
@@ -3,9 +3,11 @@ import chai from 'chai'
 import chaiAsPromised from 'chai-as-promised'
 import sinon from 'sinon'
 import sinonChai from 'sinon-chai'
+import dirtyChai from 'dirty-chai'
 
 chai.use(chaiAsPromised)
 chai.use(sinonChai)
+chai.use(dirtyChai)
 
 global.expect = chai.expect
 global.sinon = sinon
diff --git a/test/unit/vast-loader.js b/test/unit/vast-loader.js
index 3b94952..1313d49 100644
--- a/test/unit/vast-loader.js
+++ b/test/unit/vast-loader.js
@@ -167,7 +167,7 @@ describe('VASTLoader', function () {
         const loader = createLoader('tremor-video/vast_inline_linear.xml')
         loader.on(type, spy)
         await loader.load()
-        expect(spy.called).to.be.true
+        expect(spy.called).to.be.true()
       })
     }
 
@@ -177,7 +177,7 @@ describe('VASTLoader', function () {
         const loader = createLoader('tremor-video/vast_wrapper_linear_1.xml')
         loader.on(type, spy)
         await loader.load()
-        expect(spy.calledTwice).to.be.true
+        expect(spy.calledTwice).to.be.true()
       })
     }
 
@@ -188,7 +188,7 @@ describe('VASTLoader', function () {
       try {
         await loader.load()
       } catch (err) {}
-      expect(spy.calledOnce).to.be.true
+      expect(spy.calledOnce).to.be.true()
     })
   })