diff --git a/packages/client/lib/commands/XACK.spec.ts b/packages/client/lib/commands/XACK.spec.ts
index fdfaee5fb5..dd44debe2a 100644
--- a/packages/client/lib/commands/XACK.spec.ts
+++ b/packages/client/lib/commands/XACK.spec.ts
@@ -1,28 +1,31 @@
-// import { strict as assert } from 'assert';
-// import testUtils, { GLOBAL } from '../test-utils';
-// import { transformArguments } from './XACK';
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import XACK from './XACK';
 
-// describe('XACK', () => {
-//     describe('transformArguments', () => {
-//         it('string', () => {
-//             assert.deepEqual(
-//                 transformArguments('key', 'group', '1-0'),
-//                 ['XACK', 'key', 'group', '1-0']
-//             );
-//         });
+describe('XACK', () => {
+  describe('transformArguments', () => {
+    it('string', () => {
+      assert.deepEqual(
+        XACK.transformArguments('key', 'group', '1-0'),
+        ['XACK', 'key', 'group', '1-0']
+      );
+    });
 
-//         it('array', () => {
-//             assert.deepEqual(
-//                 transformArguments('key', 'group', ['1-0', '2-0']),
-//                 ['XACK', 'key', 'group', '1-0', '2-0']
-//             );
-//         });
-//     });
+    it('array', () => {
+      assert.deepEqual(
+        XACK.transformArguments('key', 'group', ['1-0', '2-0']),
+        ['XACK', 'key', 'group', '1-0', '2-0']
+      );
+    });
+  });
 
-//     testUtils.testWithClient('client.xAck', async client => {
-//         assert.equal(
-//             await client.xAck('key', 'group', '1-0'),
-//             0
-//         );
-//     }, GLOBAL.SERVERS.OPEN);
-// });
+  testUtils.testAll('xAck', async client => {
+    assert.equal(
+      await client.xAck('key', 'group', '1-0'),
+      0
+    );
+  }, {
+    client: GLOBAL.SERVERS.OPEN,
+    cluster: GLOBAL.CLUSTERS.OPEN
+  });
+});
diff --git a/packages/client/lib/commands/XACK.ts b/packages/client/lib/commands/XACK.ts
index 4d54df00d1..89b2d58120 100644
--- a/packages/client/lib/commands/XACK.ts
+++ b/packages/client/lib/commands/XACK.ts
@@ -1,14 +1,15 @@
-// import { RedisCommandArgument, RedisCommandArguments } from '.';
-// import { pushVariadicArguments } from './generic-transformers';
+import { NumberReply, Command, RedisArgument } from '../RESP/types';
+import { RedisVariadicArgument, pushVariadicArguments } from './generic-transformers';
 
-// export const FIRST_KEY_INDEX = 1;
-
-// export function transformArguments(
-//     key: RedisCommandArgument,
-//     group: RedisCommandArgument,
-//     id: RedisCommandArgument | Array<RedisCommandArgument>
-// ): RedisCommandArguments {
-//     return pushVariadicArguments(['XACK', key, group], id);
-// }
-
-// export declare function transformReply(): number;
+export default {
+  FIRST_KEY_INDEX: 1,
+  IS_READ_ONLY: false,
+  transformArguments(
+    key: RedisArgument,
+    group: RedisArgument,
+    id: RedisVariadicArgument
+  ) {
+    return pushVariadicArguments(['XACK', key, group], id);
+  },
+  transformReply: undefined as unknown as () => NumberReply
+} as const satisfies Command;
diff --git a/packages/client/lib/commands/index.ts b/packages/client/lib/commands/index.ts
index a07c5b8b02..fa48aa9ef4 100644
--- a/packages/client/lib/commands/index.ts
+++ b/packages/client/lib/commands/index.ts
@@ -141,6 +141,7 @@ import UNLINK from './UNLINK';
 import UNWATCH from './UNWATCH';
 import WAIT from './WAIT';
 import WATCH from './WATCH';
+import XACK from './XACK';
 import XADD_NOMKSTREAM from './XADD_NOMKSTREAM';
 import XADD from './XADD';
 import XLEN from './XLEN';
@@ -456,6 +457,8 @@ export default {
   wait: WAIT,
   WATCH,
   watch: WATCH,
+  XACK,
+  xAck: XACK,
   XADD_NOMKSTREAM,
   xAddNoMkStream: XADD_NOMKSTREAM,
   XADD,