diff --git a/CHANGELOG.md b/CHANGELOG.md
index d4b8caa4..b9c5d7cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,33 @@
+# 2017-01-10 version 2.1.0
+
+## << breaking changes >>
+
+  * Fix object internal data type is float if msgpack format is float32 (#531)
+
+## << recommended changes >>
+
+  * Add `FLOAT64` type. Please use it instead of `DOUBLE` (#531)
+  * Add `FLOAT32` type. Please use it instead of `FLOAT` (#531)
+
+## << other updates >>
+
+  * Add iterator based parse/unpack function(experimental) (#553)
+  * Add `[[deprecated]]` attribute for C++14 (#552)
+  * Fix `msgpack_unpack()` return code (#548)
+  * Fix integer overflow (#547, #549, #550)
+  * Add example codes (#542)
+  * Add MSGPACK_NVP. You can use not only variable name but also any strings (#535)
+  * Fix and Improve build system (#532, #545)
+  * Fix `gcc_atomic.hpp` include path (#529, #530)
+  * Improve CI environment (#526)
+  * Improve documents (#524)
+  * Add msgpack_unpacker_next_with_size() function (#515)
+  * Fix `as()` applying condition (#511)
+  * Fix fbuffer write (#504)
+  * Add gcc bug workaround (#499)
+  * Improve object print (#497, #500, #505, #533)
+  * Remove some warnings (#495, #506, #508, #513, #528, #538, #545)
+
 # 2016-06-25 version 2.0.0
 
 ## << breaking changes >>
diff --git a/README.md b/README.md
index 62162cbd..110395da 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 `msgpack` for C/C++
 ===================
 
-Version 2.0.0 (under development)[![Build Status](https://travis-ci.org/msgpack/msgpack-c.svg?branch=master)](https://travis-ci.org/msgpack/msgpack-c) [![Build status](https://ci.appveyor.com/api/projects/status/8kstcgt79qj123mw/branch/master?svg=true)](https://ci.appveyor.com/project/redboltz/msgpack-c/branch/master)
+Version 2.1.0 [![Build Status](https://travis-ci.org/msgpack/msgpack-c.svg?branch=master)](https://travis-ci.org/msgpack/msgpack-c) [![Build status](https://ci.appveyor.com/api/projects/status/8kstcgt79qj123mw/branch/master?svg=true)](https://ci.appveyor.com/project/redboltz/msgpack-c/branch/master)
 
 It's like JSON but small and fast.
 
diff --git a/appveyor.yml b/appveyor.yml
index e18dde8d..7dde6d68 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,4 @@
-version: 2.0.0.{build}
+version: 2.1.0.{build}
 
 environment:
   matrix:
diff --git a/include/msgpack/version_master.h b/include/msgpack/version_master.h
index 793031ce..6b66c954 100644
--- a/include/msgpack/version_master.h
+++ b/include/msgpack/version_master.h
@@ -1,3 +1,3 @@
 #define MSGPACK_VERSION_MAJOR    2
-#define MSGPACK_VERSION_MINOR    0
+#define MSGPACK_VERSION_MINOR    1
 #define MSGPACK_VERSION_REVISION 0