diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 86b273b7..5fe20baa 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "2.27.1"
+    ".": "2.28.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c6e4280..4320c684 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## [2.28.0](https://github.com/mdn/data/compare/v2.27.1...v2.28.0) (2026-04-13)
+
+
+### Features
+
+* **css:** Add and fix `-webkit-border-start/end/before/after-*` ([#1061](https://github.com/mdn/data/issues/1061)) ([903bf40](https://github.com/mdn/data/commit/903bf407d085fa85c6a7cb2736232f75bf5b5412))
+* **css:** add schema validation and supplementary documentation for custom properties ([#1057](https://github.com/mdn/data/issues/1057)) ([fd3122b](https://github.com/mdn/data/commit/fd3122bb4daa0ffe930b73767e42b9c7ae1f4ceb))
+* **css:** Update syntax and initial value for `rx` `ry` ([#1058](https://github.com/mdn/data/issues/1058)) ([2e4cbca](https://github.com/mdn/data/commit/2e4cbcaf41a1923bffd74bd216a5e1d68af04495))
+
 ## [2.27.1](https://github.com/mdn/data/compare/v2.27.0...v2.27.1) (2026-02-13)
 
 
diff --git a/package-lock.json b/package-lock.json
index be4f0aae..35e6d998 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mdn-data",
-  "version": "2.27.1",
+  "version": "2.28.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mdn-data",
-      "version": "2.27.1",
+      "version": "2.28.0",
       "license": "CC0-1.0",
       "devDependencies": {
         "ajv": "^7.2.4",
diff --git a/package.json b/package.json
index f541b68f..5acfd38e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mdn-data",
-  "version": "2.27.1",
+  "version": "2.28.0",
   "description": "Open Web data by the Mozilla Developer Network",
   "main": "index.js",
   "files": [