diff --git a/.eslintrc b/.eslintrc
index 2ccbbab..11d01f9 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -14,6 +14,5 @@
     "node": true
   },
   "extends": "eslint:recommended",
-  "ecmaFeatures": {},
   "plugins": []
 }
diff --git a/lib/route-node.js b/lib/route-node.js
index 2fc4cae..ece1538 100644
--- a/lib/route-node.js
+++ b/lib/route-node.js
@@ -8,8 +8,7 @@ var isRegExp = utils.isRegExp
 var isString = utils.isString
 var noop = utils.noop
 
-function RouteNode (options) {
-  options = options || {}
+function RouteNode () {
   this._children = Object.create(null)
   this._funcs = Object.create(null)
   this._regExs = Object.create(null)
diff --git a/lib/router.js b/lib/router.js
index 2603bb5..e32ffb9 100644
--- a/lib/router.js
+++ b/lib/router.js
@@ -10,8 +10,7 @@ var isFunction = utils.isFunction
 var isString = utils.isString
 var noop = utils.noop
 
-function Router(options) {
-  options = options || {}
+function Router() {
   this.routes = new RouteNode()
 }
 
diff --git a/package.json b/package.json
index a972feb..a0152d4 100644
--- a/package.json
+++ b/package.json
@@ -27,8 +27,8 @@
   },
   "homepage": "https://github.com/xbudex/routing-buddy#readme",
   "devDependencies": {
-    "eslint": "^1.10.3",
-    "expect": "^1.14.0",
-    "mocha": "^2.4.5"
+    "eslint": "^6.8.0",
+    "expect": "^25.5.0",
+    "mocha": "^7.1.2"
   }
 }
diff --git a/test/route-node.js b/test/route-node.js
index 7e0d308..30b5b56 100644
--- a/test/route-node.js
+++ b/test/route-node.js
@@ -3,7 +3,7 @@ var RouteNode = require('../lib/route-node')
 
 module.exports = describe('RouteNode', function () {
   it('→ exists', function () {
-    expect(new RouteNode()).toExist()
+    expect(new RouteNode()).not.toBeUndefined()
   })
 
   describe('→ add nodes', function () {
@@ -38,11 +38,11 @@ module.exports = describe('RouteNode', function () {
 
     it('→ get error callback for not found', function (done) {
       node.get(['fake', 'route'], [], function (err, func, cbContext, args) {
-        expect(err).toBeA(Error)
+        expect(err).toBeInstanceOf(Error)
         expect(err.message).toMatch(/not found/)
-        expect(func).toNotExist()
-        expect(cbContext).toNotExist()
-        expect(args).toNotExist()
+        expect(func).toBeUndefined()
+        expect(cbContext).toBeUndefined()
+        expect(args).toBeUndefined()
         done()
       })
     })
diff --git a/test/router.js b/test/router.js
index e5f54fe..9c54a10 100644
--- a/test/router.js
+++ b/test/router.js
@@ -4,7 +4,7 @@ var NotFoundError = require('../lib/error').NotFound
 
 describe('Router', function () {
   it('→ exists', function () {
-    expect(Router).toExist()
+    expect(Router).not.toBeUndefined()
   })
 
   it('→ add root node', function (done) {
@@ -31,7 +31,7 @@ describe('Router', function () {
     var router = new Router()
     router.add(['/user', /^(\d+)$/], function (number) { return number })
     router.route('/user/', function (err) {
-      expect(err).toBeA(NotFoundError)
+      expect(err).toBeInstanceOf(NotFoundError)
       done()
     })
   })
@@ -39,9 +39,9 @@ describe('Router', function () {
   it('→ get error in callback for missing handler', function (done) {
     var router = new Router()
     router.route('/some/fake/path', function (err, handlerResult) {
-      expect(err).toBeA(Error)
+      expect(err).toBeInstanceOf(Error)
       expect(err.message).toMatch(/not found/)
-      expect(handlerResult).toNotExist()
+      expect(handlerResult).toBeUndefined()
       done()
     })
   })
@@ -62,7 +62,7 @@ describe('Router', function () {
     var router = new Router()
     router.add(['/by/id', /\d+/], function () {})
     router.route('/by/id/not-an-id', function (err) {
-      expect(err).toBeA(NotFoundError)
+      expect(err).toBeInstanceOf(NotFoundError)
       done()
     })
   })
@@ -85,8 +85,8 @@ describe('Router', function () {
     var router = new Router()
     router.add(['by', 'order', /(\d+)/], function (one, two, three) {
       expect(one).toBe('1')
-      expect(two).toNotExist()
-      expect(three).toNotExist()
+      expect(two).toBeUndefined()
+      expect(three).toBeUndefined()
     })
 
     router.route('/by/order/1-2-3', function (err) {
@@ -131,7 +131,7 @@ describe('Router', function () {
     var router = new Router()
     router.add(['/by/order', toInt], function () {})
     router.route('/by/order/not-found', function (err) {
-      expect(err).toBeA(NotFoundError)
+      expect(err).toBeInstanceOf(NotFoundError)
       done()
     })
   })
diff --git a/test/utils.js b/test/utils.js
index 44f2e74..d41a8e9 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -16,12 +16,12 @@ SomeClass.prototype.bar = 'asdf'
 
 describe('utils', function () {
   it('→ exists', function () {
-    expect(utils).toExist()
+    expect(utils).not.toBeUndefined()
   })
 
   describe('→ noop', function () {
     it('→ is a function', function () {
-      expect(noop).toBeA(Function)
+      expect(noop).toBeInstanceOf(Function)
     })
   })