diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7921f263f8..ca199beb0b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@ All notable changes to this project are documented below.
 
 The format is based on [keep a changelog](http://keepachangelog.com/) and this project uses [semantic versioning](http://semver.org/).
 
-## [Unreleased]
+## [0.12.1] - 2017-03-28
 ### Added
 - Optionally allow JSON encoding in user login/register operations and responses.
 
@@ -12,7 +12,7 @@ The format is based on [keep a changelog](http://keepachangelog.com/) and this p
 - Allow group batch fetch by both ID and name.
 - Increase heartbeat server time precision.
 - Rework the embedded dashboard.
-- Allow up to 64 characters for device ID linking.
+- Support 64 characters with `SystemInfo.deviceUniqueIdentifier` on Windows with device ID link messages.
 
 ### Fixed
 - Fix Facebook unlink operation.
diff --git a/Makefile b/Makefile
index 3e00c1294e..26caf0db0a 100644
--- a/Makefile
+++ b/Makefile
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 BINNAME := nakama
-VERSION := 0.13.0-dev
+VERSION := 0.12.1
 BUILDDIR := build
 COMMITID := $(shell git rev-parse --short HEAD 2>/dev/null || echo nosha)