diff --git a/CHANGELOG.md b/CHANGELOG.md
index 62d7ba6cb4..78437d56c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -27,6 +27,10 @@ should change the heading of the (upcoming) version to include a major version b
 - Fixed issue with formData not updating when dependencies change, fixing [#4325](https://github.com/rjsf-team/react-jsonschema-form/issues/4325)
 - Fixed issue with assigning default values to formData with deeply nested required properties, fixing [#4399](https://github.com/rjsf-team/react-jsonschema-form/issues/4399)
 
+## @rjsf/validator-ajv8
+
+- Switched uses of `lodash.isEqual()` to `@rjsf/utils.deepEquals` at precompiledValidator.
+
 # 5.23.2
 
 ## @rjsf/core
diff --git a/packages/validator-ajv8/src/precompiledValidator.ts b/packages/validator-ajv8/src/precompiledValidator.ts
index 1ec6bff8af..a79c079dcd 100644
--- a/packages/validator-ajv8/src/precompiledValidator.ts
+++ b/packages/validator-ajv8/src/precompiledValidator.ts
@@ -1,8 +1,9 @@
 import { ErrorObject } from 'ajv';
 import get from 'lodash/get';
-import { deepEqual } from 'fast-equals';
+
 import {
   CustomValidator,
+  deepEquals,
   ErrorSchema,
   ErrorTransformer,
   FormContextType,
@@ -92,10 +93,10 @@ export default class AJV8PrecompiledValidator<
    * @param [formData] - The form data to validate if any
    */
   ensureSameRootSchema(schema: S, formData?: T) {
-    if (!deepEqual(schema, this.rootSchema)) {
+    if (!deepEquals(schema, this.rootSchema)) {
       // Resolve the root schema with the passed in form data since that may affect the resolution
       const resolvedRootSchema = retrieveSchema(this, this.rootSchema, this.rootSchema, formData);
-      if (!deepEqual(schema, resolvedRootSchema)) {
+      if (!deepEquals(schema, resolvedRootSchema)) {
         throw new Error(
           'The schema associated with the precompiled validator differs from the rootSchema provided for validation'
         );