diff --git a/packages/json/lib/commands/MERGE.spec.ts b/packages/json/lib/commands/MERGE.spec.ts
new file mode 100644
index 0000000000..650fb4e873
--- /dev/null
+++ b/packages/json/lib/commands/MERGE.spec.ts
@@ -0,0 +1,19 @@
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import { transformArguments } from './MERGE';
+
+describe('MERGE', () => {
+    it('transformArguments', () => {
+        assert.deepEqual(
+            transformArguments('key', '$', 1),
+            ['JSON.MERGE', 'key', '$', '1']
+        );
+    });
+
+    testUtils.testWithClient('client.json.merge', async client => {
+        assert.equal(
+            await client.json.merge('key', '$', 'json'),
+            'OK'
+        );
+    }, GLOBAL.SERVERS.OPEN);
+});
\ No newline at end of file
diff --git a/packages/json/lib/commands/MERGE.ts b/packages/json/lib/commands/MERGE.ts
new file mode 100644
index 0000000000..1aada1f520
--- /dev/null
+++ b/packages/json/lib/commands/MERGE.ts
@@ -0,0 +1,9 @@
+import { RedisJSON, transformRedisJsonArgument } from '.';
+
+export const FIRST_KEY_INDEX = 1;
+
+export function transformArguments(key: string, path: string, json: RedisJSON): Array<string> {
+    return ['JSON.MERGE', key, path, transformRedisJsonArgument(json)];
+}
+
+export declare function transformReply(): 'OK' | null;
\ No newline at end of file
diff --git a/packages/json/lib/commands/index.ts b/packages/json/lib/commands/index.ts
index efcf156b84..cc9dc824ca 100644
--- a/packages/json/lib/commands/index.ts
+++ b/packages/json/lib/commands/index.ts
@@ -9,6 +9,7 @@ import * as DEL from './DEL';
 import * as FORGET from './FORGET';
 import * as GET from './GET';
 import * as MGET from './MGET';
+import * as MERGE from './MERGE';
 import * as NUMINCRBY from './NUMINCRBY';
 import * as NUMMULTBY from './NUMMULTBY';
 import * as OBJKEYS from './OBJKEYS';
@@ -40,6 +41,8 @@ export default {
     forget: FORGET,
     GET,
     get: GET,
+    MERGE,
+    merge: MERGE,
     MGET,
     mGet: MGET,
     NUMINCRBY,