diff --git a/CHANGELOG.md b/CHANGELOG.md
index 07306945a..8ce154e9c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 ## Change Log
 
+### v4.9.0 (2026-07-30)
+
+#### Changes
+
+- [#4488](https://github.com/less/less.js/pull/4488) feat: support `[...]` lookups in `@{...}` interpolation (@matthew-dean)
+
+
 ### v4.8.1 (2026-07-26)
 
 #### Changes
diff --git a/package.json b/package.json
index 8d45d816e..d864e1418 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "@less/root",
 	"private": true,
-	"version": "4.8.1",
+	"version": "4.9.0",
 	"description": "Less monorepo",
 	"homepage": "http://lesscss.org",
 	"scripts": {
diff --git a/packages/less/package.json b/packages/less/package.json
index 905104ac5..bf66980f4 100644
--- a/packages/less/package.json
+++ b/packages/less/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "less",
-	"version": "4.8.1",
+	"version": "4.9.0",
 	"description": "Leaner CSS",
 	"homepage": "http://lesscss.org",
 	"author": {
diff --git a/packages/test-data/package.json b/packages/test-data/package.json
index b08e158ff..51f40bca6 100644
--- a/packages/test-data/package.json
+++ b/packages/test-data/package.json
@@ -3,7 +3,7 @@
 	"publishConfig": {
 		"access": "public"
 	},
-	"version": "4.8.1",
+	"version": "4.9.0",
 	"description": "Less files and CSS results",
 	"author": "Alexis Sellier <self@cloudhead.net>",
 	"contributors": [
diff --git a/packages/test-import-module/package.json b/packages/test-import-module/package.json
index 2e9c3b8ae..745b5c211 100644
--- a/packages/test-import-module/package.json
+++ b/packages/test-import-module/package.json
@@ -1,7 +1,7 @@
 {
 	"name": "@less/test-import-module",
 	"private": true,
-	"version": "4.8.1",
+	"version": "4.9.0",
 	"description": "Less files to be included in node_modules directory for testing import from node_modules",
 	"author": "Alexis Sellier <self@cloudhead.net>",
 	"contributors": [