diff --git a/Makefile b/Makefile
index a1c202a81..abd416178 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 PROJECT = emqttd
 PROJECT_DESCRIPTION = Erlang MQTT Broker
-PROJECT_VERSION = 2.1.2
+PROJECT_VERSION = 2.2
 
 DEPS = goldrush gproc lager esockd mochiweb pbkdf2 lager_syslog bcrypt
 
diff --git a/src/emqttd.app.src b/src/emqttd.app.src
index ecb210e53..4b3e2a1f6 100644
--- a/src/emqttd.app.src
+++ b/src/emqttd.app.src
@@ -1,12 +1,12 @@
-{application, emqttd, [
-    {description, "Erlang MQTT Broker"},
-    {vsn, "2.2"},
-    {modules, []},
-    {registered, [emqttd_sup]},
-    {applications, [kernel,stdlib,gproc,lager,esockd,mochiweb,lager_syslog,pbkdf2]},
-    {env, []},
-    {mod, {emqttd_app, []}},
-    {maintainers, ["Feng Lee <feng@emqtt.io>"]},
-    {licenses, ["Apache-2.0"]},
-    {links, [{"Github", "https://github.com/emqtt/emqttd"}]}
-]}.
+{application,emqttd,
+             [{description,"Erlang MQTT Broker"},
+              {vsn,"2.2"},
+              {modules,[]},
+              {registered,[emqttd_sup]},
+              {applications,[kernel,stdlib,gproc,lager,esockd,mochiweb,
+                             lager_syslog,pbkdf2]},
+              {env,[]},
+              {mod,{emqttd_app,[]}},
+              {maintainers,["Feng Lee <feng@emqtt.io>"]},
+              {licenses,["Apache-2.0"]},
+              {links,[{"Github","https://github.com/emqtt/emqttd"}]}]}.