diff --git a/packages/sdk/test/bench/document.bench.ts b/packages/sdk/test/bench/document.bench.ts
index 6f3c28dc8..17f53231c 100644
--- a/packages/sdk/test/bench/document.bench.ts
+++ b/packages/sdk/test/bench/document.bench.ts
@@ -1,5 +1,4 @@
 import { Document, JSONArray } from '@yorkie-js-sdk/src/yorkie';
-import { MaxTimeTicket } from '@yorkie-js-sdk/src/document/time/ticket';
 import { InitialCheckpoint } from '@yorkie-js-sdk/src/document/change/checkpoint';
 import { DocumentStatus } from '@yorkie-js-sdk/src/document/document';
 import { describe, bench, assert } from 'vitest';
diff --git a/packages/sdk/test/bench/text.bench.ts b/packages/sdk/test/bench/text.bench.ts
index 262bea3e6..9b91bbaca 100644
--- a/packages/sdk/test/bench/text.bench.ts
+++ b/packages/sdk/test/bench/text.bench.ts
@@ -1,5 +1,4 @@
 import { Document, Text } from '@yorkie-js-sdk/src/yorkie';
-import { MaxTimeTicket } from '@yorkie-js-sdk/src/document/time/ticket';
 import { assert, bench, describe } from 'vitest';
 import { MaxVersionVector } from '../helper/helper';
 
diff --git a/packages/sdk/test/bench/tree.bench.ts b/packages/sdk/test/bench/tree.bench.ts
index 6751579f5..c03b3577e 100644
--- a/packages/sdk/test/bench/tree.bench.ts
+++ b/packages/sdk/test/bench/tree.bench.ts
@@ -1,5 +1,4 @@
 import { converter, Document, Tree, TreeNode } from '@yorkie-js-sdk/src/yorkie';
-import { MaxTimeTicket } from '@yorkie-js-sdk/src/document/time/ticket';
 import { describe, bench, assert } from 'vitest';
 import { MaxVersionVector } from '../helper/helper';