diff --git a/packages/client/lib/commands/ZUNION.spec.ts b/packages/client/lib/commands/ZUNION.spec.ts
index b988290604..a8aad53803 100644
--- a/packages/client/lib/commands/ZUNION.spec.ts
+++ b/packages/client/lib/commands/ZUNION.spec.ts
@@ -1,48 +1,51 @@
-// import { strict as assert } from 'assert';
-// import testUtils, { GLOBAL } from '../test-utils';
-// import { transformArguments } from './ZUNION';
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import ZUNION from './ZUNION';
 
-// describe('ZUNION', () => {
-//     testUtils.isVersionGreaterThanHook([6, 2]);
+describe('ZUNION', () => {
+  testUtils.isVersionGreaterThanHook([6, 2]);
 
-//     describe('transformArguments', () => {
-//         it('key (string)', () => {
-//             assert.deepEqual(
-//                 transformArguments('key'),
-//                 ['ZUNION', '1', 'key']
-//             );
-//         });
+  describe('transformArguments', () => {
+    it('key (string)', () => {
+      assert.deepEqual(
+        ZUNION.transformArguments('key'),
+        ['ZUNION', '1', 'key']
+      );
+    });
 
-//         it('keys (array)', () => {
-//             assert.deepEqual(
-//                 transformArguments(['1', '2']),
-//                 ['ZUNION', '2', '1', '2']
-//             );
-//         });
+    it('keys (array)', () => {
+      assert.deepEqual(
+        ZUNION.transformArguments(['1', '2']),
+        ['ZUNION', '2', '1', '2']
+      );
+    });
 
-//         it('with WEIGHTS', () => {
-//             assert.deepEqual(
-//                 transformArguments('key', {
-//                     WEIGHTS: [1]
-//                 }),
-//                 ['ZUNION', '1', 'key', 'WEIGHTS', '1']
-//             );
-//         });
+    it('with WEIGHTS', () => {
+      assert.deepEqual(
+        ZUNION.transformArguments('key', {
+          WEIGHTS: [1]
+        }),
+        ['ZUNION', '1', 'key', 'WEIGHTS', '1']
+      );
+    });
 
-//         it('with AGGREGATE', () => {
-//             assert.deepEqual(
-//                 transformArguments('key', {
-//                     AGGREGATE: 'SUM'
-//                 }),
-//                 ['ZUNION', '1', 'key', 'AGGREGATE', 'SUM']
-//             );
-//         });
-//     });
+    it('with AGGREGATE', () => {
+      assert.deepEqual(
+        ZUNION.transformArguments('key', {
+          AGGREGATE: 'SUM'
+        }),
+        ['ZUNION', '1', 'key', 'AGGREGATE', 'SUM']
+      );
+    });
+  });
 
-//     testUtils.testWithClient('client.zUnion', async client => {
-//         assert.deepEqual(
-//             await client.zUnion('key'),
-//             []
-//         );
-//     }, GLOBAL.SERVERS.OPEN);
-// });
+  testUtils.testAll('client.zUnion', async client => {
+    assert.deepEqual(
+      await client.zUnion('key'),
+      []
+    );
+  }, {
+    client: GLOBAL.SERVERS.OPEN,
+    cluster: GLOBAL.CLUSTERS.OPEN
+  });
+});
diff --git a/packages/client/lib/commands/ZUNION.ts b/packages/client/lib/commands/ZUNION.ts
index 537aecc850..f9eb06fbdf 100644
--- a/packages/client/lib/commands/ZUNION.ts
+++ b/packages/client/lib/commands/ZUNION.ts
@@ -1,30 +1,29 @@
-// import { RedisCommandArgument, RedisCommandArguments } from '.';
-// import { pushVariadicArgument } from './generic-transformers';
+import { ArrayReply, BlobStringReply, Command } from '../RESP/types';
+import { RedisVariadicArgument, pushVariadicArgument } from './generic-transformers';
 
-// export const FIRST_KEY_INDEX = 2;
+export interface ZUnionOptions {
+  WEIGHTS?: Array<number>;
+  AGGREGATE?: 'SUM' | 'MIN' | 'MAX';
+}
 
-// export const IS_READ_ONLY = true;
+export default {
+  FIRST_KEY_INDEX: 2,
+  IS_READ_ONLY: true,
+  transformArguments(
+    keys: RedisVariadicArgument,
+    options?: ZUnionOptions
+  ) {
+    const args = pushVariadicArgument(['ZUNION'], keys);
 
-// interface ZUnionOptions {
-//     WEIGHTS?: Array<number>;
-//     AGGREGATE?: 'SUM' | 'MIN' | 'MAX';
-// }
+    if (options?.WEIGHTS) {
+      args.push('WEIGHTS', ...options.WEIGHTS.map(weight => weight.toString()));
+    }
 
-// export function transformArguments(
-//     keys: Array<RedisCommandArgument> | RedisCommandArgument,
-//     options?: ZUnionOptions
-// ): RedisCommandArguments {
-//     const args = pushVariadicArgument(['ZUNION'], keys);
+    if (options?.AGGREGATE) {
+      args.push('AGGREGATE', options.AGGREGATE);
+    }
 
-//     if (options?.WEIGHTS) {
-//         args.push('WEIGHTS', ...options.WEIGHTS.map(weight => weight.toString()));
-//     }
-
-//     if (options?.AGGREGATE) {
-//         args.push('AGGREGATE', options.AGGREGATE);
-//     }
-
-//     return args;
-// }
-
-// export declare function transformReply(): Array<RedisCommandArgument>;
+    return args;
+  },
+  transformReply: undefined as unknown as () => ArrayReply<BlobStringReply>
+} as const satisfies Command;
diff --git a/packages/client/lib/commands/index.ts b/packages/client/lib/commands/index.ts
index 491e0b3224..0d435c6a4c 100644
--- a/packages/client/lib/commands/index.ts
+++ b/packages/client/lib/commands/index.ts
@@ -170,6 +170,7 @@ import ZREM from './ZREM';
 import ZREVRANK from './ZREVRANK';
 import ZSCAN from './ZSCAN';
 import ZSCORE from './ZSCORE';
+import ZUNION from './ZUNION';
 import { Command } from '../RESP/types';
 
 export default {
@@ -517,5 +518,7 @@ export default {
   ZSCAN,
   zScan: ZSCAN,
   ZSCORE,
-  zScore: ZSCORE
+  zScore: ZSCORE,
+  ZUNION,
+  zUnion: ZUNION
 } as const satisfies Record<string, Command>;
diff --git a/todo.md b/todo.md
index 3be2364f5c..adb88fe025 100644
--- a/todo.md
+++ b/todo.md
@@ -1,6 +1,7 @@
 # return type \ missing documentation
 - `XAUTOCLAIM`
 - `XSETID`
+- `ZUNION`
 
 
 # create commands
@@ -12,14 +13,8 @@
 
 
 # waiting List
-- `BZMPOP.ts`
-- `BZPOPMAX.ts`
-- `BZPOPMIN.ts`
 - `ZRANGEBYSCORE.ts`
 - `ZRANGEBYLEX.ts`
-- `ZPOPMIN.ts`
-- `ZPOPMAX.ts`
-- `ZMPOP.ts`
 - `ZUNION.ts`
 - `ZREMRANGEBYLEX.ts`
 - `ZREMRANGEBYRANK.ts`
@@ -27,6 +22,14 @@
 - `ZUNION.ts`
 - `ZUNIONSTORE.ts`
 
+# fot leiba
+- `BZMPOP.ts`
+- `BZPOPMAX.ts`
+- `BZPOPMIN.ts`
+- `ZMPOP.ts`
+- `ZPOPMAX.ts`
+- `ZPOPMIN.ts`
+
 
 # other