diff --git a/CHANGELOG.md b/CHANGELOG.md
index b379460..e5ac09e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,13 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+### [4.3.2](https://github.com/webpack/schema-utils/compare/v4.3.1...v4.3.2) (2025-04-22)
+
+
+### Bug Fixes
+
+* compatibility with old types ([#198](https://github.com/webpack/schema-utils/issues/198)) ([8e31ef3](https://github.com/webpack/schema-utils/commit/8e31ef311484ad1c0d122266fe520d1f1cb90fad))
+
 ### [4.3.1](https://github.com/webpack/schema-utils/compare/v4.3.0...v4.3.1) (2025-04-22)
 
 
diff --git a/declarations/validate.d.ts b/declarations/validate.d.ts
index 5ed73b2..6e4eec4 100644
--- a/declarations/validate.d.ts
+++ b/declarations/validate.d.ts
@@ -10,6 +10,7 @@ export type ExtendedSchema = {
   link?: string | undefined;
   undefinedAsNull?: boolean | undefined;
 };
+export type Extend = ExtendedSchema;
 export type Schema = (JSONSchema4 | JSONSchema6 | JSONSchema7) & ExtendedSchema;
 export type SchemaUtilErrorObject = ErrorObject & {
   children?: Array<ErrorObject>;
diff --git a/package-lock.json b/package-lock.json
index b76374c..9e646bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "schema-utils",
-  "version": "4.3.1",
+  "version": "4.3.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "schema-utils",
-      "version": "4.3.1",
+      "version": "4.3.2",
       "license": "MIT",
       "dependencies": {
         "@types/json-schema": "^7.0.9",
diff --git a/package.json b/package.json
index 83b0a42..b9e23d8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "schema-utils",
-  "version": "4.3.1",
+  "version": "4.3.2",
   "description": "webpack Validation Utils",
   "license": "MIT",
   "repository": "webpack/schema-utils",
diff --git a/src/validate.js b/src/validate.js
index 3b0cb38..7a40e06 100644
--- a/src/validate.js
+++ b/src/validate.js
@@ -59,6 +59,9 @@ const getAjv = memoize(() => {
  * @property {boolean=} undefinedAsNull
  */
 
+// TODO remove me in the next major release
+/** @typedef {ExtendedSchema} Extend */
+
 /** @typedef {(JSONSchema4 | JSONSchema6 | JSONSchema7) & ExtendedSchema} Schema */
 
 /** @typedef {ErrorObject & { children?: Array<ErrorObject> }} SchemaUtilErrorObject */