diff --git a/lib/mongodb-backend.js b/lib/mongodb-backend.js
index e3eb8de..ed8c32e 100644
--- a/lib/mongodb-backend.js
+++ b/lib/mongodb-backend.js
@@ -65,7 +65,7 @@ MongoDBBackend.prototype = {
     this.db.collection(this.prefix + this.removeUnsupportedChar(collName),function(err,collection){
       if(err instanceof Error) return cb(err);
       // Excluding bucket field from search result
-      collection.findOne(searchParams, {_bucketname: 0},function(err, doc){
+      collection.findOne(searchParams, {projection: {_bucketname: 0}},function(err, doc){
         if(err) return cb(err);
         if(! _.isObject(doc) ) return cb(undefined,[]);
         doc = fixKeys(doc);
@@ -88,7 +88,7 @@ MongoDBBackend.prototype = {
     this.db.collection(this.prefix + this.removeUnsupportedChar(collName),function(err,collection){
       if(err instanceof Error) return cb(err);
       // Excluding bucket field from search result
-      collection.find(searchParams, {_bucketname: 0}).toArray(function(err,docs){
+      collection.find(searchParams, {projection: {_bucketname: 0}}).toArray(function(err,docs){
         if(err instanceof Error) return cb(err);
         if( ! docs.length ) return cb(undefined, []);
 
diff --git a/package.json b/package.json
index 496e6c6..b80c101 100644
--- a/package.json
+++ b/package.json
@@ -18,15 +18,15 @@
     "async": "^2.1.4",
     "bluebird": "^3.0.2",
     "lodash": "^4.17.3",
-    "mongodb": "^2.0.47",
+    "mongodb": "^3.1.1",
     "redis": "^2.2.5"
   },
   "devDependencies": {
-    "mocha": "^3.2.0",
-    "chai": "^3.4.0"
+    "mocha": "^5.2.0",
+    "chai": "^4.1.2"
   },
   "scripts": {
-    "test": "mocha test/runner.js --reporter spec",
+    "test": "mocha test/runner.js --reporter spec --exit",
     "cover": "istanbul cover -- _mocha test/runner.js --reporter spec"
   }
 }
diff --git a/test/runner.js b/test/runner.js
index 3092900..ed39689 100644
--- a/test/runner.js
+++ b/test/runner.js
@@ -7,7 +7,8 @@ describe('MongoDB - Default', function () {
     var self = this
       , mongodb = require('mongodb')
 
-    mongodb.connect('mongodb://localhost:27017/acltest',function(error, db) {
+    mongodb.connect('mongodb://localhost:27017/acltest',function(error, client) {
+      const db = client.db('acltest');
       db.dropDatabase(function () {
         self.backend = new Acl.mongodbBackend(db, "acl")
         done()
@@ -24,7 +25,8 @@ describe('MongoDB - useSingle', function () {
     var self = this
       , mongodb = require('mongodb')
 
-    mongodb.connect('mongodb://localhost:27017/acltest',function(error, db) {
+    mongodb.connect('mongodb://localhost:27017/acltest',function(error, client) {
+      const db = client.db('acltest');
       db.dropDatabase(function () {
         self.backend = new Acl.mongodbBackend(db, "acl", true)
         done()