diff --git a/lib/routes/authenticate.js b/lib/routes/authenticate.js
index da12a32..5c63575 100644
--- a/lib/routes/authenticate.js
+++ b/lib/routes/authenticate.js
@@ -2,10 +2,11 @@ import ldap from 'ldapjs';
 import auth0 from 'auth0';
 import logger from '../logger';
 
-export default function(domain, clientId) {
+export default function(domain, clientId, clientSecret) {
   const client = new auth0.AuthenticationClient({
     domain: domain,
-    clientId: clientId
+    clientId: clientId,
+    clientSecret: clientSecret
   });
 
   return (req, res, next) => {
@@ -17,7 +18,7 @@ export default function(domain, clientId) {
       return next(new ldap.InvalidDnSyntaxError(`The username '${req.dn.toString()}' does not match 'CN=username,OU=connection'`));
     }
 
-    client.oauth.signIn({ username: parsedName[1], password: req.credentials, connection: parsedName[2] })
+    client.oauth.passwordGrant({ username: parsedName[1], password: req.credentials, realm: parsedName[2] })
       .then(() => {
         logger.info(`Bind success for ${req.dn.toString()}`);
         res.end();
diff --git a/server.js b/server.js
index 420c5c2..2f3c8f3 100644
--- a/server.js
+++ b/server.js
@@ -17,7 +17,12 @@ nconf
 logger.info('Starting LDAP endpoint for Auth...');
 
 const server = ldap.createServer();
-server.bind('', authenticate(nconf.get('AUTH0_DOMAIN'), nconf.get('AUTH0_CLIENT_ID')));
+server.bind('', authenticate(
+  nconf.get('AUTH0_DOMAIN'),
+  nconf.get('AUTH0_CLIENT_ID'),
+  nconf.get('AUTH0_CLIENT_SECRET')
+));
+
 server.search('', requireAdministrator, search(nconf.get('AUTH0_DOMAIN'), nconf.get('AUTH0_API_TOKEN')));
 server.listen(nconf.get('LDAP_PORT'), () => {
   logger.info(`LDAP server listening on: ${server.url}`);