diff --git a/CHANGELOG.md b/CHANGELOG.md
index d34fe3de..c3ad50e3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,8 +16,16 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
   - [x] Proxy support
   - [ ] Reuse connection
 
+## [0.12.1] (2021-11-04)
+
+### Fixed
+
+- Reduce alloc too many memory. [#108](https://github.com/icyleaf/halite/pull/108) (thanks @[wolfgang371](https://github.com/wolfgang371))
+
 ## [0.12.0] (2021-03-24)
 
+### Fixed
+
 - Compatibility with Crystal 1.0.
 
 ## [0.11.0] (2021-02-18)
@@ -365,7 +373,8 @@ Compatibility with Crystal 0.25
 
 - First beta version.
 
-[Unreleased]: https://github.com/icyleaf/halite/compare/v0.12.0...HEAD
+[Unreleased]: https://github.com/icyleaf/halite/compare/v0.12.1...HEAD
+[0.12.1]: https://github.com/icyleaf/halite/compare/v0.12.0...v0.12.1
 [0.12.0]: https://github.com/icyleaf/halite/compare/v0.11.0...v0.12.0
 [0.11.0]: https://github.com/icyleaf/halite/compare/v0.10.9...v0.11.0
 [0.10.9]: https://github.com/icyleaf/halite/compare/v0.10.8...v0.10.9
diff --git a/shard.yml b/shard.yml
index 6174cf2b..82ad101d 100644
--- a/shard.yml
+++ b/shard.yml
@@ -1,5 +1,5 @@
 name: halite
-version: 0.12.0
+version: 0.12.1
 
 authors:
   - icyleaf <icyleaf.cn@gmail.com>
diff --git a/src/halite.cr b/src/halite.cr
index 512e1149..e8a70b93 100644
--- a/src/halite.cr
+++ b/src/halite.cr
@@ -4,7 +4,7 @@ require "./halite/ext/*"
 module Halite
   extend Chainable
 
-  VERSION = "0.12.0"
+  VERSION = "0.12.1"
 
   module Helper
     # Parses a `Time` into a [RFC 3339](https://tools.ietf.org/html/rfc3339) datetime format string