diff --git a/History.md b/History.md
index ca24460..a40aaa0 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,9 @@
 
+0.9.4 / 2016-03-03
+==================
+
+  * login: extend configuration instead of overwriting it [@rauchg]
+
 0.9.3 / 2016-03-03
 ==================
 
diff --git a/lib/login.js b/lib/login.js
index 478e593..9ddd9a0 100644
--- a/lib/login.js
+++ b/lib/login.js
@@ -1,5 +1,5 @@
 import { homedir } from 'os';
-import { join as pathJoin } from 'path';
+import path from 'path';
 import fs from 'fs-promise';
 import fetch from 'node-fetch';
 import { stringify as stringifyQuery } from 'querystring';
@@ -77,12 +77,13 @@ async function register () {
 }
 
 export default async function () {
-  const path = resolve(os.homedir(), '.now.json');
+  const file = path.resolve(homedir(), '.now.json');
   const loginData = await register();
   let existing = null;
   try {
-    existing = await fs.readFile(path, 'utf8');
-  } catch(err){}
+    existing = await fs.readFile(file, 'utf8');
+    existing = JSON.parse(existing);
+  } catch (err) {}
   const config = Object.extend({}, existing, loginData);
-  return fs.writeFile(path, JSON.stringify(config));
+  return fs.writeFile(file, JSON.stringify(config));
 }
diff --git a/package.json b/package.json
index b0faae1..76be4c5 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "now",
-  "version": "0.9.3",
+  "version": "0.9.4",
   "description": "Realtime Deployments for Node.JS apps.",
   "main": "./build/lib/index",
   "files": [