diff --git a/package.json b/package.json
index 77d1e5ed..d6b4492b 100644
--- a/package.json
+++ b/package.json
@@ -49,6 +49,9 @@
     "semver": "5.6.0",
     "simple-git": "1.65.0"
   },
+  "peerDependencies": {
+    "mongoose": ">=4.0.0"
+  },
   "scripts": {
     "build": "./node_modules/babel-cli/bin/babel.js src --out-dir dist && echo '\n\\033[0;34m[+] \\033[0;32mBuild done\\033[0m'",
     "build:watch": "onchange 'src/**/*.js' -i -- yarn build",
diff --git a/src/services/has-many-getter.js b/src/services/has-many-getter.js
index d38cdfbb..150ba19d 100644
--- a/src/services/has-many-getter.js
+++ b/src/services/has-many-getter.js
@@ -1,5 +1,6 @@
 const _ = require('lodash');
 const P = require('bluebird');
+const mongooseTypes = require('mongoose').Types;
 const SearchBuilder = require('./search-builder');
 const Interface = require('forest-express');
 const utils = require('../utils/schema');
@@ -49,7 +50,7 @@ function HasManyGetter(model, association, opts, params) {
     return new P((resolve, reject) => {
       let id = params.recordId;
       if (OBJECTID_REGEXP.test(params.recordId)) {
-        id = opts.mongoose.Types.ObjectId(id);
+        id = mongooseTypes.ObjectId(id);
       }
 
       return model