diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4f5e9573..478f0d8d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,19 @@
-2015-3-22 version 1.0.1:
+2015-04-03 version 1.1.0
+  << breaking change >>
+  * Remove msgpack_fwd.hpp
+  * Improve user types adaptation mechanism (#262)
+    Since version 1.0.0, users need to obey the correct include order.
+    However, it is very difficult to maintain the correct order in big
+    projects. version 1.1.0 removed this order. Users don't need to
+    care about include order. Migration guide from 1.0.x to 1.1.0 has
+    been written. See https://github.com/msgpack/msgpack-c/wiki
+
+  * Fix vector<bool> size check (#251)
+  * Fix inttypes.h inclusion on MSVC (#257)
+  * Support documents generation by Doxygen (#259)
+  * Remove C99 style variable declaration (#253)
+  * Improve documents (https://github.com/msgpack/msgpack-c/wiki)
+2015-03-22 version 1.0.1:
   * Fix compilation error on Mac 10.9 (#244)
   * Fix typos in documents (#240)
   * Update CHANGELOG.md for version 1.0.0 (#242)
diff --git a/README.md b/README.md
index 2eefade7..4f5d39e2 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 `msgpack` for C/C++
 ===================
 
-Version 1.0.1 [![Build Status](https://travis-ci.org/msgpack/msgpack-c.svg?branch=master)](https://travis-ci.org/msgpack/msgpack-c)
+Version 1.1.0 [![Build Status](https://travis-ci.org/msgpack/msgpack-c.svg?branch=master)](https://travis-ci.org/msgpack/msgpack-c)
 
 It's like JSON but small and fast.
 
diff --git a/include/msgpack/version_master.h b/include/msgpack/version_master.h
index e8f62ce1..4fa83ee4 100644
--- a/include/msgpack/version_master.h
+++ b/include/msgpack/version_master.h
@@ -1,3 +1,3 @@
 #define MSGPACK_VERSION_MAJOR    1
-#define MSGPACK_VERSION_MINOR    0
-#define MSGPACK_VERSION_REVISION 1
+#define MSGPACK_VERSION_MINOR    1
+#define MSGPACK_VERSION_REVISION 0