diff --git a/packages/jest-config/src/ValidConfig.ts b/packages/jest-config/src/ValidConfig.ts
index d8d4ff8bcb5f..db7ea5fe6d3c 100644
--- a/packages/jest-config/src/ValidConfig.ts
+++ b/packages/jest-config/src/ValidConfig.ts
@@ -5,6 +5,7 @@
  * LICENSE file in the root directory of this source tree.
  */
 
+import type {SnapshotFormat} from '@jest/schemas';
 import type {Config} from '@jest/types';
 import {replacePathSepForRegex} from 'jest-regex-util';
 import {multipleValidOptions} from 'jest-validate';
@@ -110,7 +111,10 @@ const initialOptions: Config.InitialOptions = {
   skipFilter: false,
   skipNodeResolution: false,
   slowTestThreshold: 5,
-  snapshotFormat: PRETTY_FORMAT_DEFAULTS,
+  snapshotFormat: {
+    ...PRETTY_FORMAT_DEFAULTS,
+    compareKeys: () => {},
+  } as SnapshotFormat,
   snapshotResolver: '<rootDir>/snapshotResolver.js',
   snapshotSerializers: ['my-serializer-module'],
   testEnvironment: 'jest-environment-node',
diff --git a/packages/jest-config/src/__tests__/normalize.test.ts b/packages/jest-config/src/__tests__/normalize.test.ts
index 6b5732afa047..fb229b4e335d 100644
--- a/packages/jest-config/src/__tests__/normalize.test.ts
+++ b/packages/jest-config/src/__tests__/normalize.test.ts
@@ -9,6 +9,7 @@
 import {createHash} from 'crypto';
 import path from 'path';
 import semver = require('semver');
+import type {SnapshotFormat} from '@jest/schemas';
 import type {Config} from '@jest/types';
 import {escapeStrForRegex} from 'jest-regex-util';
 import Defaults from '../Defaults';
@@ -1918,3 +1919,20 @@ describe('updateSnapshot', () => {
     Defaults.ci = defaultCiConfig;
   });
 });
+
+describe('snapshotFormat', () => {
+  it('should accept custom `compareKeys`', async () => {
+    const compareKeys = () => 0;
+
+    const {options} = await normalize(
+      {
+        ci: false,
+        rootDir: '/root/',
+        snapshotFormat: {compareKeys} as SnapshotFormat,
+      },
+      {} as Config.Argv,
+    );
+
+    expect((options.snapshotFormat as any).compareKeys).toBe(compareKeys);
+  });
+});