diff --git a/packages/onesignal/index.js b/packages/onesignal/index.js
index 7992fb84..db5408f4 100755
--- a/packages/onesignal/index.js
+++ b/packages/onesignal/index.js
@@ -2,6 +2,7 @@ const path = require('path')
 const { writeFileSync, readFileSync } = require('fs')
 const hashSum = require('hash-sum')
 const debug = require('debug')('nuxt:pwa')
+const { defaultsDeep } = require('lodash')
 
 const fixUrl = url => url.replace(/\/\//g, '/').replace(':/', '://')
 const isUrl = url => url.indexOf('http') === 0 || url.indexOf('//') === 0
@@ -55,7 +56,7 @@ function addOneSignal (moduleOptions) {
     }
   }
 
-  const options = Object.assign(defaults, moduleOptions, this.options.oneSignal)
+  const options = defaultsDeep({}, this.options.oneSignal, moduleOptions, defaults)
 
   if (options.OneSignalSDK === undefined) {
     if (options.cdn) {
diff --git a/packages/workbox/index.js b/packages/workbox/index.js
index 6d783f99..6f889676 100755
--- a/packages/workbox/index.js
+++ b/packages/workbox/index.js
@@ -4,6 +4,7 @@ const { readFileSync, writeFileSync } = require('fs')
 const hashSum = require('hash-sum')
 const escapeStringRegexp = require('escape-string-regexp')
 const debug = require('debug')('nuxt:pwa')
+const { defaultsDeep } = require('lodash')
 
 const fixUrl = url => url.replace(/\/\//g, '/').replace(':/', '://')
 const isUrl = url => url.indexOf('http') === 0 || url.indexOf('//') === 0
@@ -43,7 +44,7 @@ function getOptions (moduleOptions) {
     }
   }
 
-  const options = Object.assign({
+  const defaults = {
     autoRegister: true,
     routerBase,
     publicPath,
@@ -70,7 +71,9 @@ function getOptions (moduleOptions) {
         handler: 'networkFirst'
       }
     ]
-  }, moduleOptions, this.options.workbox)
+  }
+
+  const options = defaultsDeep({}, this.options.workbox, moduleOptions, defaults)
 
   return options
 }