diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7fffdb2..27de2b8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,22 @@ All notable changes to rustvncserver will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.1.0] - 2025-12-17
+
+### Fixed
+
+- **Critical ZRLE encoding bug:** Fixed buffer overflow on non-standard dimensions
+  - Root cause: Hardcoded `bytes_per_pixel = 4` instead of using `PixelFormat::bytes_per_pixel()`
+  - Affected screen resolutions not divisible by 64 (e.g., 960x540)
+  - Fixed CPIXEL size calculation per RFC 6143
+  - Fixed input buffer validation to use correct bytes per pixel
+
+### Changed
+
+- Updated `rfb-encodings` dependency from `0.1.5` to `0.1.6`
+  - Includes comprehensive test suite with 44 automated tests
+  - All 10 encodings now have test coverage (golden, round-trip, or smoke tests)
+
 ## [2.0.0] - 2025-10-27
 
 **Stable Release** - This marks the official 2.0.0 release, graduating from beta status.
diff --git a/Cargo.toml b/Cargo.toml
index b1e5ab5..da3f6ee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "rustvncserver"
-version = "2.0.0"
+version = "2.1.0"
 edition = "2021"
 rust-version = "1.90"
 authors = ["Dustin McAfee"]