diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 200d86e..b6aca89 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
-  "packages/python": "0.6.4",
-  "packages/javascript": "2.2.1"
+  "packages/python": "0.6.5",
+  "packages/javascript": "2.3.0"
 }
\ No newline at end of file
diff --git a/packages/javascript/CHANGELOG.md b/packages/javascript/CHANGELOG.md
index 50cd291..ee1869e 100644
--- a/packages/javascript/CHANGELOG.md
+++ b/packages/javascript/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.3.0](https://github.com/OpenDisplay/epaper-dithering/compare/javascript-v2.2.1...javascript-v2.3.0) (2026-03-16)
+
+
+### Features
+
+* add toneCompression parameter (number | 'auto') to errorDiffusionDither, ([157bd6f](https://github.com/OpenDisplay/epaper-dithering/commit/157bd6fb180a2ad9957fb63dc74c2c22542ff6ee))
+
 ## [2.2.1](https://github.com/OpenDisplay/epaper-dithering/compare/javascript-v2.2.0...javascript-v2.2.1) (2026-03-12)
 
 
diff --git a/packages/javascript/package.json b/packages/javascript/package.json
index dd5fe1d..c6d7a4a 100644
--- a/packages/javascript/package.json
+++ b/packages/javascript/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opendisplay/epaper-dithering",
-  "version": "2.2.1",
+  "version": "2.3.0",
   "description": "Dithering algorithms for e-paper/e-ink displays (JavaScript/TypeScript)",
   "type": "module",
   "main": "./dist/index.cjs",
diff --git a/packages/python/CHANGELOG.md b/packages/python/CHANGELOG.md
index da8e3e0..3b66ae9 100644
--- a/packages/python/CHANGELOG.md
+++ b/packages/python/CHANGELOG.md
@@ -1,5 +1,29 @@
 # Changelog
 
+## [0.6.5](https://github.com/OpenDisplay/epaper-dithering/compare/python-v0.6.4...python-v0.6.5) (2026-03-16)
+
+
+### Features
+
+* add auto mode for gamut compression ([9a9ffee](https://github.com/OpenDisplay/epaper-dithering/commit/9a9ffee1f734af51c3a96fa09178a3a1036538be))
+* add comparison script ([d60c797](https://github.com/OpenDisplay/epaper-dithering/commit/d60c79773623dae363a6688f2bc36b2999f5455f))
+* add gamut compression ([c5e4df9](https://github.com/OpenDisplay/epaper-dithering/commit/c5e4df90c1cf33ce1b4e1f12d184c1f382254352))
+* add gamut_compression sheet to compare script ([f0c1db4](https://github.com/OpenDisplay/epaper-dithering/commit/f0c1db4e7d485fd8eb2f5313f34a832477d90421))
+* add SPECTRA_7_3_6COLOR_V2 palette with calibrated measurements ([fac7112](https://github.com/OpenDisplay/epaper-dithering/commit/fac71125e4efa1da0f7c7b0371f2d435d7309006))
+* change lab to oklab ([7904094](https://github.com/OpenDisplay/epaper-dithering/commit/79040946367ab20f38cce9ca5746466d499fefa3))
+* **compare:** add gamut_compression contact sheet; fix int literals ([7755c3d](https://github.com/OpenDisplay/epaper-dithering/commit/7755c3dde42fed2b199c7823c47fb1d114374177))
+* **tone-map:** continuous strength for auto gamut compression ([68d9b7c](https://github.com/OpenDisplay/epaper-dithering/commit/68d9b7cf53e27e0df7ab7d4a387957a54ca22fc2))
+* **tone-map:** hue-preserving gamut compression ([bdddc97](https://github.com/OpenDisplay/epaper-dithering/commit/bdddc9756c9098ef6bd4bf616b7385cb2f317d52))
+* **tone-map:** iterative optimization for auto gamut compression strength ([4263183](https://github.com/OpenDisplay/epaper-dithering/commit/4263183aabc97113908dafa22bb9c89fe8e9cfe7))
+* **tone-map:** use Reinhard 2004 log-skewness for auto compression strength ([715dc0a](https://github.com/OpenDisplay/epaper-dithering/commit/715dc0af89fc1236ef7f50fcdc0b30f5520f0bd8))
+
+
+### Bug Fixes
+
+* correct OKLab LCH weights and gamut compression gating ([05685a8](https://github.com/OpenDisplay/epaper-dithering/commit/05685a86529d9ef3319b8785b38a0f27b62aebb8))
+* **tests:** update LAB/auto-compress tests for OKLab and conservative auto strength ([86b1075](https://github.com/OpenDisplay/epaper-dithering/commit/86b107513085ba7b0967022f3c3b95f677c84104))
+* use sRGB space for error diffusion, conditional auto tone compression ([fab9017](https://github.com/OpenDisplay/epaper-dithering/commit/fab9017f500e0e81945be41667d2a3015859b4bc))
+
 ## [0.6.4](https://github.com/OpenDisplay/epaper-dithering/compare/python-v0.6.3...python-v0.6.4) (2026-03-07)
 
 
diff --git a/packages/python/pyproject.toml b/packages/python/pyproject.toml
index 4cc8aa8..02c9230 100644
--- a/packages/python/pyproject.toml
+++ b/packages/python/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "epaper-dithering"
-version = "0.6.4"
+version = "0.6.5"
 description = "Dithering algorithms for e-paper/e-ink displays"
 readme = "README.md"
 license = "MIT"
diff --git a/packages/python/src/epaper_dithering/__init__.py b/packages/python/src/epaper_dithering/__init__.py
index d875fed..79d2174 100644
--- a/packages/python/src/epaper_dithering/__init__.py
+++ b/packages/python/src/epaper_dithering/__init__.py
@@ -19,7 +19,7 @@
     ColorScheme,
 )
 
-__version__ = "0.6.4"
+__version__ = "0.6.5"
 
 __all__ = [
     "dither_image",