diff --git a/package.json b/package.json
index 05bb481..e13e333 100644
--- a/package.json
+++ b/package.json
@@ -40,27 +40,25 @@
   },
   "devDependencies": {
     "@bubltechnology/customizable-commit-analyzer": "https://github.com/fullcube/customizable-commit-analyzer/tarball/364e96c6f590c20f82d76557a5fa0d4481c48c5f",
-    "chai": "^3.5.0",
-    "condition-circle": "^1.5.0",
-    "conventional-commit-types": "^2.1.0",
-    "coveralls": "^2.11.16",
-    "dirty-chai": "^1.2.2",
-    "eslint": "2.13.1",
-    "eslint-config-fullcube": "latest",
-    "eslint-plugin-mocha": "latest",
-    "husky": "^0.13.1",
-    "loopback": "^2.36.0",
-    "mocha": "^3.2.0",
-    "mocha-sinon": "^1.1.6",
-    "nyc": "^10.1.2",
-    "semantic-release": "^6.3.2",
-    "sinon": "^1.17.6",
-    "sinon-chai": "^2.8.0",
-    "validate-commit-msg": "^2.11.1"
+    "chai": "4.0.2",
+    "condition-circle": "1.5.0",
+    "conventional-commit-types": "2.1.0",
+    "coveralls": "2.13.1",
+    "dirty-chai": "2.0.0",
+    "eslint-config-fullcube": "^2.0.2",
+    "husky": "0.14.0",
+    "loopback": "3.8.0",
+    "mocha": "3.4.2",
+    "mocha-sinon": "2.0.0",
+    "nyc": "11.0.2",
+    "semantic-release": "6.3.6",
+    "sinon": "2.3.5",
+    "sinon-chai": "2.11.0",
+    "validate-commit-msg": "2.12.2"
   },
   "dependencies": {
-    "lodash": "^4.17.2",
-    "debug": "^2.3.3"
+    "debug": "2.6.8",
+    "lodash": "^4.17.4"
   },
   "release": {
     "verifyConditions": "condition-circle",
diff --git a/test/test.js b/test/test.js
index 08e981b..430024d 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,7 +1,7 @@
 const loopback = require('loopback')
 
 const chai = require('chai')
-const expect = chai.expect
+const { expect } = chai
 
 chai.use(require('sinon-chai'))
 chai.use(require('dirty-chai'))
@@ -45,7 +45,6 @@ const Item = loopback.PersistedModel.extend('Item', {
       type: 'hasMany',
       model: 'Poly',
       polymorphic: {
-        as: 'poly',
         foreignKey: 'referenceId',
         discriminator: 'referenceType',
       },