diff --git a/.eslintrc.js b/.eslintrc.js
index 2873e2f..ed0fac1 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -6,7 +6,7 @@ module.exports = {
   },
   extends: 'eslint:recommended',
   env: {
-    browser: true
+    node: true
   },
   rules: {
   }
diff --git a/lib/gcloud/storage.js b/lib/gcloud/storage.js
index 5c23f9d..f2b294c 100644
--- a/lib/gcloud/storage.js
+++ b/lib/gcloud/storage.js
@@ -1,11 +1,9 @@
 /* jshint node: true */
 'use strict';
 
-const Readable = require('stream').Readable;
 const { Storage } = require('@google-cloud/storage');
 
 class GoogleCloudStorage {
-
   constructor(credentials) {
     const options = {};
     if (credentials) {
@@ -15,25 +13,14 @@ class GoogleCloudStorage {
     this.storage = new Storage(options);
   }
 
-  upload(bucket, key, file) {
-    let upload = this.storage.bucket(bucket).file(key);
-
-    if (typeof file === 'string') {
-      let stream = new Readable();
-      stream.push(file);
-      stream.push(null);
-      file = stream;
-    }
-
-    return new Promise(function(resolve, reject){
-      file.pipe(upload.createWriteStream())
-        .on('error', function(error){
-          reject('Failed to upload file ' + key + ' - ' + error.message);
-        })
-        .on('finish', resolve);
-    });
+  upload(bucket, key, filepath) {
+    return this.storage.bucket(bucket).upload(
+      filepath,
+      {
+        destination: key
+      }
+    );
   }
-
 }
 
 module.exports = GoogleCloudStorage;
diff --git a/lib/tasks/upload.js b/lib/tasks/upload.js
index 23118d2..98372b8 100644
--- a/lib/tasks/upload.js
+++ b/lib/tasks/upload.js
@@ -5,6 +5,7 @@ const GoogleCloudStorage = require('../gcloud/storage');
 
 const fs = require('fs');
 const path = require('path');
+const util = require('util');
 
 class GoogleCloudStorageUploadTask {
 
@@ -19,34 +20,38 @@ class GoogleCloudStorageUploadTask {
     this.storage = new GoogleCloudStorage(options.credentials);
   }
 
-
-  run() {
-    return this.uploadHashedZip()
-      .then(() => this.uploadVersionFile());
+  async run() {
+    await this.uploadHashedZip();
+    await this.uploadVersionFile();
   }
 
   uploadHashedZip() {
-    let hashedZipPath = this.hashedZipPath;
-    let bucket = this.bucket;
-
-    this.log('uploading ' + hashedZipPath + ' to ' + bucket, { verbose: true });
-
-    let file = fs.createReadStream(hashedZipPath);
+    this.log(`uploading ${this.hashedZipPath} to ${this.bucket} at ${this.hashedZipKey}`, { verbose: true });
 
-    return this.storage.upload(bucket, this.hashedZipKey, file);
+    return this.storage.upload(
+      this.bucket,
+      this.hashedZipKey,
+      path.resolve(this.hashedZipPath)
+    );
   }
 
-  uploadVersionFile() {
-    let versionFile = {
-      bucket: this.bucket,
-      key: this.hashedZipKey
-    };
+  async uploadVersionFile() {
+    this.log(`uploading version file to ${this.bucket} at ${this.key}`, { verbose: true });
 
-    versionFile = JSON.stringify(versionFile);
+    const dir = path.dirname(this.hashedZipPath);
+    const filename = path.resolve(path.join(dir, this.key));
 
-    return this.storage.upload(this.bucket, this.key, versionFile);
-  }
+    const writeFile = util.promisify(fs.writeFile);
+    await writeFile(
+      filename,
+      JSON.stringify({
+        bucket: this.bucket,
+        key: this.hashedZipKey
+      })
+    );
 
+    return this.storage.upload(this.bucket, this.key, filename);
+  }
 }
 
 module.exports = GoogleCloudStorageUploadTask;