diff --git a/Cargo.toml b/Cargo.toml
index b0cb88b..8abb95a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 authors = ["Y. T. Chung <zonyitoo@gmail.com>"]
 name = "mqtt-protocol"
-version = "0.11.2"
+version = "0.12.0"
 license = "MIT/Apache-2.0"
 description = "MQTT Protocol Library"
 keywords = ["mqtt", "protocol"]
diff --git a/README.md b/README.md
index 78ae7c1..8f1b7aa 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ MQTT protocol library for Rust
 
 ```toml
 [dependencies]
-mqtt-protocol = "0.11"
+mqtt-protocol = "0.12"
 ```
 
 ## Usage