diff --git a/bin/index.js b/bin/index.js
index db3a754..0bdb231 100644
--- a/bin/index.js
+++ b/bin/index.js
@@ -6,9 +6,10 @@ const mod = require('../src/index.mjs').default;
 const logger = require('../src/lib/logger.mjs').default;
 
 const { index, interval, ...elasticsearch } = getopts(process.argv.slice(2), {
-  string: ['host', 'log'],
+  string: ['host', 'auth', 'log', 'index'],
   alias: {
     h: 'host',
+    u: 'auth',
     l: 'log',
     i: 'index',
     t: 'interval',
diff --git a/src/index.mjs b/src/index.mjs
index a7b2d31..7156c51 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -9,6 +9,7 @@ export default async function(indexName, opts = {}) {
   const client = new elasticsearch.Client({
     host: opts.elasticsearch.host,
     log: opts.elasticsearch.log,
+    httpAuth: opts.elasticsearch.auth,
   });
 
   // make sure we can connect to the node