diff --git a/src/emqttd.app.src b/src/emqttd.app.src
index 4b3e2a1f6..3a7ed3482 100644
--- a/src/emqttd.app.src
+++ b/src/emqttd.app.src
@@ -4,7 +4,7 @@
               {modules,[]},
               {registered,[emqttd_sup]},
               {applications,[kernel,stdlib,gproc,lager,esockd,mochiweb,
-                             lager_syslog,pbkdf2]},
+                             lager_syslog,pbkdf2,bcrypt]},
               {env,[]},
               {mod,{emqttd_app,[]}},
               {maintainers,["Feng Lee <feng@emqtt.io>"]},