diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2bb0133dfe6f..b65e671d71d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -203,6 +203,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 - [Console] Remove unused ul element and its custom styling ([#3993](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3993))
 - Fix EUI/OUI type errors ([#3798](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/3798))
 - Remove unused Sass in `tile_map` plugin ([#4110](https://github.com/opensearch-project/OpenSearch-Dashboards/pull/4110))
+- Migrate from legacy elasticsearch client to opensearch-js client in `osd-opensearch-archiver` package([]())
 
 ### 🔩 Tests
 
diff --git a/packages/osd-opensearch-archiver/src/actions/empty_opensearch_dashboards_index.ts b/packages/osd-opensearch-archiver/src/actions/empty_opensearch_dashboards_index.ts
index e0b23ac8088f..2f7ba1f22fd0 100644
--- a/packages/osd-opensearch-archiver/src/actions/empty_opensearch_dashboards_index.ts
+++ b/packages/osd-opensearch-archiver/src/actions/empty_opensearch_dashboards_index.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog, OsdClient } from '@osd/dev-utils';
 
 import {
diff --git a/packages/osd-opensearch-archiver/src/actions/load.ts b/packages/osd-opensearch-archiver/src/actions/load.ts
index f513d049dbd1..65297501264a 100644
--- a/packages/osd-opensearch-archiver/src/actions/load.ts
+++ b/packages/osd-opensearch-archiver/src/actions/load.ts
@@ -32,7 +32,7 @@ import { resolve } from 'path';
 import { createReadStream } from 'fs';
 import { Readable } from 'stream';
 import { ToolingLog, OsdClient } from '@osd/dev-utils';
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 
 import { createPromiseFromStreams, concatStreamProviders } from '../lib/streams';
 
@@ -114,7 +114,7 @@ export async function loadAction({
 
   await client.indices.refresh({
     index: '_all',
-    allowNoIndices: true,
+    allow_no_indices: true,
   });
 
   // If we affected the OpenSearch Dashboards index, we need to ensure it's migrated...
diff --git a/packages/osd-opensearch-archiver/src/actions/save.ts b/packages/osd-opensearch-archiver/src/actions/save.ts
index 46f2103f8f51..5e5b0d310d5c 100644
--- a/packages/osd-opensearch-archiver/src/actions/save.ts
+++ b/packages/osd-opensearch-archiver/src/actions/save.ts
@@ -31,7 +31,7 @@
 import { resolve } from 'path';
 import { createWriteStream, mkdirSync } from 'fs';
 import { Readable, Writable } from 'stream';
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog } from '@osd/dev-utils';
 
 import { createListStream, createPromiseFromStreams } from '../lib/streams';
diff --git a/packages/osd-opensearch-archiver/src/actions/unload.ts b/packages/osd-opensearch-archiver/src/actions/unload.ts
index 3e2bb4c8535d..6896b7878c6f 100644
--- a/packages/osd-opensearch-archiver/src/actions/unload.ts
+++ b/packages/osd-opensearch-archiver/src/actions/unload.ts
@@ -31,7 +31,7 @@
 import { resolve } from 'path';
 import { createReadStream } from 'fs';
 import { Readable, Writable } from 'stream';
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog, OsdClient } from '@osd/dev-utils';
 
 import { createPromiseFromStreams } from '../lib/streams';
diff --git a/packages/osd-opensearch-archiver/src/cli.ts b/packages/osd-opensearch-archiver/src/cli.ts
index 002e3e287587..e8606ed26645 100644
--- a/packages/osd-opensearch-archiver/src/cli.ts
+++ b/packages/osd-opensearch-archiver/src/cli.ts
@@ -38,8 +38,8 @@ import Path from 'path';
 import readline from 'readline';
 
 import { RunWithCommands, createFlagError } from '@osd/dev-utils';
+import { Client, ClientOptions } from '@opensearch-project/opensearch';
 import { readConfigFile } from '@osd/test';
-import legacyElasticsearch from 'elasticsearch';
 
 import { OpenSearchArchiver } from './opensearch_archiver';
 
@@ -56,7 +56,7 @@ export function runCli() {
                              default: ${defaultConfigPath}
         --opensearch-url           url for OpenSearch, prefer the --config flag
         --opensearch-dashboards-url       url for OpenSearch Dashboards, prefer the --config flag
-        --dir              where arechives are stored, prefer the --config flag
+        --dir              where archives are stored, prefer the --config flag
       `,
     },
     async extendContext({ log, flags, addCleanupTask }) {
@@ -99,10 +99,11 @@ export function runCli() {
         throw createFlagError('--dir or --config must be defined');
       }
 
-      const client = new legacyElasticsearch.Client({
-        host: opensearchUrl,
-        log: flags.verbose ? 'trace' : [],
-      });
+      const clientOptions: ClientOptions = {
+        node: opensearchUrl.toString(),
+      };
+
+      const client = new Client(clientOptions);
       addCleanupTask(() => client.close());
 
       const opensearchArchiver = new OpenSearchArchiver({
diff --git a/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.test.ts b/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.test.ts
index 462aba6c234a..603bfc278e2d 100644
--- a/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.test.ts
+++ b/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.test.ts
@@ -47,9 +47,11 @@ describe('opensearchArchiver: createGenerateDocRecordsStream()', () => {
         expect(params).to.have.property('index', 'logstash-*');
         expect(params).to.have.property('size', 1000);
         return {
-          hits: {
-            total: 0,
-            hits: [],
+          body: {
+            hits: {
+              total: 0,
+              hits: [],
+            },
           },
         };
       },
@@ -74,9 +76,11 @@ describe('opensearchArchiver: createGenerateDocRecordsStream()', () => {
         expect(params).to.have.property('scroll', '1m');
         expect(params).to.have.property('rest_total_hits_as_int', true);
         return {
-          hits: {
-            total: 0,
-            hits: [],
+          body: {
+            hits: {
+              total: 0,
+              hits: [],
+            },
           },
         };
       },
@@ -101,17 +105,19 @@ describe('opensearchArchiver: createGenerateDocRecordsStream()', () => {
         expect(params).to.have.property('index', 'index1');
         await delay(200);
         return {
-          _scroll_id: 'index1ScrollId',
-          hits: { total: 2, hits: [{ _id: 1, _index: '.opensearch_dashboards_1' }] },
+          body: {
+            _scroll_id: 'index1ScrollId',
+            hits: { total: 2, hits: [{ _id: 1, _index: '.opensearch_dashboards_1' }] },
+          },
         };
       },
       async (name, params) => {
         expect(name).to.be('scroll');
-        expect(params).to.have.property('scrollId', 'index1ScrollId');
+        expect(params).to.have.property('scroll_id', 'index1ScrollId');
         expect(Date.now() - checkpoint).to.not.be.lessThan(200);
         checkpoint = Date.now();
         await delay(200);
-        return { hits: { total: 2, hits: [{ _id: 2, _index: 'foo' }] } };
+        return { body: { hits: { total: 2, hits: [{ _id: 2, _index: 'foo' }] } } };
       },
       async (name, params) => {
         expect(name).to.be('search');
@@ -119,7 +125,7 @@ describe('opensearchArchiver: createGenerateDocRecordsStream()', () => {
         expect(Date.now() - checkpoint).to.not.be.lessThan(200);
         checkpoint = Date.now();
         await delay(200);
-        return { hits: { total: 0, hits: [] } };
+        return { body: { hits: { total: 0, hits: [] } } };
       },
     ]);
 
diff --git a/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.ts b/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.ts
index 6949e2b4d4ff..9bbb99898600 100644
--- a/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.ts
+++ b/packages/osd-opensearch-archiver/src/lib/docs/generate_doc_records_stream.ts
@@ -29,7 +29,7 @@
  */
 
 import { Transform } from 'stream';
-import { Client, SearchParams, SearchResponse } from 'elasticsearch';
+import { Client, ApiResponse } from '@opensearch-project/opensearch';
 import { Stats } from '../stats';
 import { Progress } from '../progress';
 
@@ -53,7 +53,7 @@ export function createGenerateDocRecordsStream({
     async transform(index, enc, callback) {
       try {
         let remainingHits = 0;
-        let resp: SearchResponse<any> | null = null;
+        let resp: ApiResponse<any> | null = null;
 
         while (!resp || remainingHits > 0) {
           if (!resp) {
@@ -66,17 +66,17 @@ export function createGenerateDocRecordsStream({
                 query,
               },
               rest_total_hits_as_int: true, // not declared on SearchParams type
-            } as SearchParams);
-            remainingHits = resp.hits.total;
+            });
+            remainingHits = resp.body.hits.total;
             progress.addToTotal(remainingHits);
           } else {
             resp = await client.scroll({
-              scrollId: resp._scroll_id!,
+              scroll_id: resp.body._scroll_id!,
               scroll: SCROLL_TIMEOUT,
             });
           }
 
-          for (const hit of resp.hits.hits) {
+          for (const hit of resp.body?.hits.hits) {
             remainingHits -= 1;
             stats.archivedDoc(hit._index);
             this.push({
@@ -94,7 +94,7 @@ export function createGenerateDocRecordsStream({
             });
           }
 
-          progress.addToComplete(resp.hits.hits.length);
+          progress.addToComplete(resp.body.hits.hits.length);
         }
 
         callback(undefined);
diff --git a/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.test.ts b/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.test.ts
index 00b9e22660ca..6d070678fe81 100644
--- a/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.test.ts
+++ b/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.test.ts
@@ -65,9 +65,13 @@ describe('opensearchArchiver: createIndexDocRecordsStream()', () => {
         expect(name).to.be('bulk');
         expect(params).to.eql({
           body: recordsToBulkBody(records),
-          requestTimeout: 120000,
+          timeout: 120000,
         });
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
     ]);
     const stats = createStubStats();
@@ -90,17 +94,25 @@ describe('opensearchArchiver: createIndexDocRecordsStream()', () => {
         expect(name).to.be('bulk');
         expect(params).to.eql({
           body: recordsToBulkBody(records.slice(0, 1)),
-          requestTimeout: 120000,
+          timeout: 120000,
         });
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
       async (name, params) => {
         expect(name).to.be('bulk');
         expect(params).to.eql({
           body: recordsToBulkBody(records.slice(1)),
-          requestTimeout: 120000,
+          timeout: 120000,
         });
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
     ]);
     const stats = createStubStats();
@@ -126,19 +138,27 @@ describe('opensearchArchiver: createIndexDocRecordsStream()', () => {
         expect(name).to.be('bulk');
         expect(params).to.eql({
           body: recordsToBulkBody(records.slice(0, 1)),
-          requestTimeout: 120000,
+          timeout: 120000,
         });
         await delay(delayMs);
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
       async (name, params) => {
         expect(name).to.be('bulk');
         expect(params).to.eql({
           body: recordsToBulkBody(records.slice(1)),
-          requestTimeout: 120000,
+          timeout: 120000,
         });
         expect(Date.now() - start).to.not.be.lessThan(delayMs);
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
     ]);
     const progress = new Progress();
@@ -160,17 +180,29 @@ describe('opensearchArchiver: createIndexDocRecordsStream()', () => {
       async (name, params) => {
         expect(name).to.be('bulk');
         expect(params.body.length).to.eql(1 * 2);
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
       async (name, params) => {
         expect(name).to.be('bulk');
         expect(params.body.length).to.eql(299 * 2);
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
       async (name, params) => {
         expect(name).to.be('bulk');
         expect(params.body.length).to.eql(1 * 2);
-        return { ok: true };
+        return {
+          body: {
+            ok: true,
+          },
+        };
       },
     ]);
     const progress = new Progress();
@@ -189,8 +221,8 @@ describe('opensearchArchiver: createIndexDocRecordsStream()', () => {
     const records = createPersonDocRecords(2);
     const stats = createStubStats();
     const client = createStubClient([
-      async () => ({ ok: true }),
-      async () => ({ errors: true, forcedError: true }),
+      async () => ({ body: { ok: true } }),
+      async () => ({ body: { errors: true, forcedError: true } }),
     ]);
     const progress = new Progress();
 
diff --git a/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.ts b/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.ts
index d1ba68f7bf05..4f077f4b114c 100644
--- a/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.ts
+++ b/packages/osd-opensearch-archiver/src/lib/docs/index_doc_records_stream.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { Writable } from 'stream';
 import { Stats } from '../stats';
 import { Progress } from '../progress';
@@ -58,8 +58,8 @@ export function createIndexDocRecordsStream(
       );
     });
 
-    const resp = await client.bulk({ requestTimeout: 2 * 60 * 1000, body });
-    if (resp.errors) {
+    const resp = await client.bulk({ timeout: 2 * 60 * 1000, body });
+    if (resp.body.errors) {
       throw new Error(`Failed to index all documents: ${JSON.stringify(resp, null, 2)}`);
     }
   }
diff --git a/packages/osd-opensearch-archiver/src/lib/docs/test_stubs.ts b/packages/osd-opensearch-archiver/src/lib/docs/test_stubs.ts
index 27b5803cc31b..5630f95ba143 100644
--- a/packages/osd-opensearch-archiver/src/lib/docs/test_stubs.ts
+++ b/packages/osd-opensearch-archiver/src/lib/docs/test_stubs.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import sinon from 'sinon';
 import Chance from 'chance';
 import { times } from 'lodash';
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.test.ts b/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.test.ts
index 200a6a79f965..b78f8aa51411 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.test.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.test.ts
@@ -83,7 +83,6 @@ describe('opensearchArchiver: createCreateIndexStream()', () => {
       expect((client.indices.getAlias as sinon.SinonSpy).calledOnce).to.be.ok();
       expect((client.indices.getAlias as sinon.SinonSpy).args[0][0]).to.eql({
         name: 'existing-index',
-        ignore: [404],
       });
       expect((client.indices.delete as sinon.SinonSpy).calledOnce).to.be.ok();
       expect((client.indices.delete as sinon.SinonSpy).args[0][0]).to.eql({
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.ts b/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.ts
index 6154f0382a96..7427f8e7ae21 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/create_index_stream.ts
@@ -31,7 +31,7 @@
 import { Transform, Readable } from 'stream';
 import { inspect } from 'util';
 
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog } from '@osd/dev-utils';
 
 import { Stats } from '../stats';
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/delete_index.ts b/packages/osd-opensearch-archiver/src/lib/indices/delete_index.ts
index ee8fe10d8d0b..93c8f4fdd039 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/delete_index.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/delete_index.ts
@@ -29,7 +29,7 @@
  */
 
 import { get } from 'lodash';
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog } from '@osd/dev-utils';
 import { Stats } from '../stats';
 
@@ -46,8 +46,8 @@ export async function deleteIndex(options: {
   const { client, stats, index, log, retryIfSnapshottingCount = 10 } = options;
 
   const getIndicesToDelete = async () => {
-    const aliasInfo = await client.indices.getAlias({ name: index, ignore: [404] });
-    return aliasInfo.status === 404 ? [index] : Object.keys(aliasInfo);
+    const { body, statusCode } = await client.indices.getAlias({ name: index }, { ignore: [404] });
+    return statusCode === 404 ? [index] : Object.keys(body);
   };
 
   try {
@@ -92,7 +92,9 @@ export function isDeleteWhileSnapshotInProgressError(error: object) {
 export async function waitForSnapshotCompletion(client: Client, index: string, log: ToolingLog) {
   const isSnapshotPending = async (repository: string, snapshot: string) => {
     const {
-      snapshots: [status],
+      body: {
+        snapshots: [status],
+      },
     } = await client.snapshot.status({
       repository,
       snapshot,
@@ -103,7 +105,9 @@ export async function waitForSnapshotCompletion(client: Client, index: string, l
   };
 
   const getInProgressSnapshots = async (repository: string) => {
-    const { snapshots: inProgressSnapshots } = await client.snapshot.get({
+    const {
+      body: { snapshots: inProgressSnapshots },
+    } = await client.snapshot.get({
       repository,
       snapshot: '_current',
     });
@@ -112,7 +116,7 @@ export async function waitForSnapshotCompletion(client: Client, index: string, l
 
   for (const repository of Object.keys(await client.snapshot.getRepository({} as any))) {
     const allInProgress = await getInProgressSnapshots(repository);
-    const found = allInProgress.find((s: any) => s.indices.includes(index));
+    const found = allInProgress?.find((s: any) => s.indices.includes(index));
 
     if (!found) {
       continue;
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/delete_index_stream.ts b/packages/osd-opensearch-archiver/src/lib/indices/delete_index_stream.ts
index b728aa35757b..fe22f31e15da 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/delete_index_stream.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/delete_index_stream.ts
@@ -29,7 +29,7 @@
  */
 
 import { Transform } from 'stream';
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog } from '@osd/dev-utils';
 
 import { Stats } from '../stats';
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.test.ts b/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.test.ts
index a961cca3550e..8d0b4087ea40 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.test.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.test.ts
@@ -67,8 +67,8 @@ describe('opensearchArchiver: createGenerateIndexRecordsStream()', () => {
     ]);
 
     const params = (client.indices.get as sinon.SinonSpy).args[0][0];
-    expect(params).to.have.property('filterPath');
-    const filters: string[] = params.filterPath;
+    expect(params).to.have.property('filter_path');
+    const filters: string[] = params.filter_path;
     expect(filters.some((path) => path.includes('index.creation_date'))).to.be(true);
     expect(filters.some((path) => path.includes('index.uuid'))).to.be(true);
     expect(filters.some((path) => path.includes('index.version'))).to.be(true);
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.ts b/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.ts
index f682af3d8598..e74965657c70 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/generate_index_records_stream.ts
@@ -29,7 +29,7 @@
  */
 
 import { Transform } from 'stream';
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { Stats } from '../stats';
 
 export function createGenerateIndexRecordsStream(client: Client, stats: Stats) {
@@ -40,7 +40,7 @@ export function createGenerateIndexRecordsStream(client: Client, stats: Stats) {
       try {
         const resp = (await client.indices.get({
           index: indexOrAlias,
-          filterPath: [
+          filter_path: [
             '*.settings',
             '*.mappings',
             // remove settings that aren't really settings
@@ -56,9 +56,10 @@ export function createGenerateIndexRecordsStream(client: Client, stats: Stats) {
         })) as Record<string, any>;
 
         for (const [index, { settings, mappings }] of Object.entries(resp)) {
+          const { body, statusCode } = await client.indices.getAlias({ index });
           const {
             [index]: { aliases },
-          } = await client.indices.getAlias({ index });
+          } = statusCode === 404 ? {} : body;
 
           stats.archivedIndex(index, { settings, mappings });
           this.push({
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/opensearch_dashboards_index.ts b/packages/osd-opensearch-archiver/src/lib/indices/opensearch_dashboards_index.ts
index aff69cd2682c..9a415ebb4ee4 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/opensearch_dashboards_index.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/opensearch_dashboards_index.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { Client, CreateDocumentParams } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog, OsdClient } from '@osd/dev-utils';
 import { Stats } from '../stats';
 import { deleteIndex } from './delete_index';
@@ -52,15 +52,17 @@ export async function deleteOpenSearchDashboardsIndices({
 
   await client.indices.putSettings({
     index: indexNames,
-    body: { index: { blocks: { read_only: false } } },
+    body: { blocks: { read_only: false } },
   });
 
-  await deleteIndex({
-    client,
-    stats,
-    index: indexNames,
-    log,
-  });
+  for (const indexName of indexNames) {
+    await deleteIndex({
+      client,
+      stats,
+      index: indexName,
+      log,
+    });
+  }
 
   return indexNames;
 }
@@ -101,8 +103,8 @@ async function fetchOpenSearchDashboardsIndices(client: Client) {
     format: 'json',
   });
   const isOpenSearchDashboardsIndex = (index: string) => /^\.kibana(:?_\d*)?$/.test(index);
-  return opensearchDashboardsIndices
-    .map((x: { index: string }) => x.index)
+  return opensearchDashboardsIndices.body
+    .map((x) => x.index?.toString() ?? '')
     .filter(isOpenSearchDashboardsIndex);
 }
 
@@ -133,21 +135,19 @@ export async function cleanOpenSearchDashboardsIndices({
           bool: {
             must_not: {
               ids: {
-                type: '_doc',
                 values: ['space:default'],
               },
             },
           },
         },
       },
-      ignore: [409],
     });
 
-    if (resp.total !== resp.deleted) {
+    if (resp.body.total !== resp.body.deleted) {
       log.warning(
         'delete by query deleted %d of %d total documents, trying again',
-        resp.deleted,
-        resp.total
+        resp.body.deleted,
+        resp.body.total
       );
       continue;
     }
@@ -166,9 +166,7 @@ export async function cleanOpenSearchDashboardsIndices({
 export async function createDefaultSpace({ index, client }: { index: string; client: Client }) {
   await client.create({
     index,
-    type: '_doc',
     id: 'space:default',
-    ignore: 409,
     body: {
       type: 'space',
       updated_at: new Date().toISOString(),
@@ -179,5 +177,5 @@ export async function createDefaultSpace({ index, client }: { index: string; cli
         _reserved: true,
       },
     },
-  } as CreateDocumentParams);
+  });
 }
diff --git a/packages/osd-opensearch-archiver/src/lib/indices/test_stubs.ts b/packages/osd-opensearch-archiver/src/lib/indices/test_stubs.ts
index 64b42a629cd6..bab84dd653b2 100644
--- a/packages/osd-opensearch-archiver/src/lib/indices/test_stubs.ts
+++ b/packages/osd-opensearch-archiver/src/lib/indices/test_stubs.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import sinon from 'sinon';
 import { ToolingLog } from '@osd/dev-utils';
 import { Stats } from '../stats';
@@ -113,14 +113,13 @@ export const createStubClient = (
       getAlias: sinon.spy(async ({ index, name }) => {
         if (index && existingIndices.indexOf(index) >= 0) {
           const result = indexAlias(aliases, index);
-          return { [index]: { aliases: result ? { [result]: {} } : {} } };
+          return { body: { [index]: { aliases: result ? { [result]: {} } : {} } } };
         }
 
         if (name && aliases[name]) {
-          return { [aliases[name]]: { aliases: { [name]: {} } } };
+          return { body: { [aliases[name]]: { aliases: { [name]: {} } } } };
         }
-
-        return { status: 404 };
+        return { statusCode: 404 };
       }),
       updateAliases: sinon.spy(async ({ body }) => {
         body.actions.forEach(
diff --git a/packages/osd-opensearch-archiver/src/opensearch_archiver.ts b/packages/osd-opensearch-archiver/src/opensearch_archiver.ts
index 9e6a1246b184..bb831b05c0b0 100644
--- a/packages/osd-opensearch-archiver/src/opensearch_archiver.ts
+++ b/packages/osd-opensearch-archiver/src/opensearch_archiver.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { Client } from 'elasticsearch';
+import { Client } from '@opensearch-project/opensearch';
 import { ToolingLog, OsdClient } from '@osd/dev-utils';
 
 import {