diff --git a/packages/integration-sdk-runtime/src/synchronization/__tests__/index.test.ts b/packages/integration-sdk-runtime/src/synchronization/__tests__/index.test.ts
index 0833ac4fa..ee6f35aaf 100644
--- a/packages/integration-sdk-runtime/src/synchronization/__tests__/index.test.ts
+++ b/packages/integration-sdk-runtime/src/synchronization/__tests__/index.test.ts
@@ -30,9 +30,6 @@ import { getRootStorageDirectory, readJsonFromPath } from '../../fileSystem';
 import { generateSynchronizationJob } from './util/generateSynchronizationJob';
 import { getExpectedRequestHeaders } from '../../../test/util/request';
 
-import { promisify } from 'util';
-import { gzip } from 'zlib';
-
 import * as shrinkBatchRawData from '../shrinkBatchRawData';
 
 afterEach(() => {
@@ -755,11 +752,6 @@ describe('uploadDataChunk', () => {
   });
 });
 
-const gz = promisify(gzip);
-async function gzipData(data: object) {
-  return await gz(JSON.stringify(data));
-}
-
 function createTestContext(
   options?: Partial<
     Pick<SynchronizeInput, 'source' | 'scope' | 'compressUploads'>