diff --git a/docs/v4-to-v5.md b/docs/v4-to-v5.md
index 6c77ca2684..e1d67a9d0f 100644
--- a/docs/v4-to-v5.md
+++ b/docs/v4-to-v5.md
@@ -178,7 +178,7 @@ Some command arguments/replies have changed to align more closely to data types
 - `TOPK.QUERY`: `Array<number>` -> `Array<boolean>`
 - `GRAPH.SLOWLOG`: `timestamp` has been changed from `Date` to `number`
 - `JSON.ARRINDEX`: `start` and `end` arguments moved to `{ range: { start: number; end: number; }; }` [^future-proofing]
-- `JSON.ARRLEN`, `JSON.CLEAR`, `JSON.DEBUG MEMORY`, `JSON.DEL`, `JSON.FORGET`, `JSON.OBJKEYS`, `JSON.OBJLEN`, `JSON.STRLEN`, `JSON.TYPE`: `path` argument moved to `{ path: string; }` [^future-proofing]
+- `JSON.ARRLEN`, `JSON.CLEAR`, `JSON.DEBUG MEMORY`, `JSON.DEL`, `JSON.FORGET`, `JSON.OBJKEYS`, `JSON.OBJLEN`, `JSON.STRAPPEND`, `JSON.STRLEN`, `JSON.TYPE`: `path` argument moved to `{ path: string; }` [^future-proofing]
 - : `path` argument moved to `{ path: string; }` [^future-proofing]
 - `TS.[M][REV]RANGE`: `enum TimeSeriesBucketTimestamp` -> `const TIME_SERIES_BUCKET_TIMESTAMP` [^enum-to-constants], `enum TimeSeriesReducers` -> `const TIME_SERIES_REDUCERS` [^enum-to-constants], the `ALIGN` argument has been moved into `AGGREGRATION`
 - `TS.SYNUPDATE`: `Array<string | Array<string>>` -> `Record<string, Array<string>>`
diff --git a/packages/json/lib/commands/STRAPPEND.spec.ts b/packages/json/lib/commands/STRAPPEND.spec.ts
index 06e6b60b10..8927ce8461 100644
--- a/packages/json/lib/commands/STRAPPEND.spec.ts
+++ b/packages/json/lib/commands/STRAPPEND.spec.ts
@@ -1,30 +1,32 @@
-// import { strict as assert } from 'assert';
-// import testUtils, { GLOBAL } from '../test-utils';
-// import { transformArguments } from './STRAPPEND';
+import { strict as assert } from 'assert';
+import testUtils, { GLOBAL } from '../test-utils';
+import STRAPPEND from './STRAPPEND';
 
-// describe('STRAPPEND', () => {
-//     describe('transformArguments', () => {
-//         it('without path', () => {
-//             assert.deepEqual(
-//                 transformArguments('key', 'append'),
-//                 ['JSON.STRAPPEND', 'key', '"append"']
-//             );
-//         });
+describe('JSON.STRAPPEND', () => {
+  describe('transformArguments', () => {
+    it('simple', () => {
+      assert.deepEqual(
+        STRAPPEND.transformArguments('key', 'append'),
+        ['JSON.STRAPPEND', 'key', '"append"']
+      );
+    });
 
-//         it('with path', () => {
-//             assert.deepEqual(
-//                 transformArguments('key', '$', 'append'),
-//                 ['JSON.STRAPPEND', 'key', '$', '"append"']
-//             );
-//         });
-//     });
+    it('with path', () => {
+      assert.deepEqual(
+        STRAPPEND.transformArguments('key', 'append', {
+          path: '$'
+        }),
+        ['JSON.STRAPPEND', 'key', '$', '"append"']
+      );
+    });
+  });
 
-//     testUtils.testWithClient('client.json.strAppend', async client => {
-//         await client.json.set('key', '$', '');
+  testUtils.testWithClient('client.json.strAppend', async client => {
+    const [, reply] = await Promise.all([
+      client.json.set('key', '$', ''),
+      client.json.strAppend('key', 'append')
+    ]);
 
-//         assert.deepEqual(
-//             await client.json.strAppend('key', '$', 'append'),
-//             [6]
-//         );
-//     }, GLOBAL.SERVERS.OPEN);
-// });
+    assert.deepEqual(reply, 6);
+  }, GLOBAL.SERVERS.OPEN);
+});
diff --git a/packages/json/lib/commands/STRAPPEND.ts b/packages/json/lib/commands/STRAPPEND.ts
index 3f8e98e6bc..ad3cd377c9 100644
--- a/packages/json/lib/commands/STRAPPEND.ts
+++ b/packages/json/lib/commands/STRAPPEND.ts
@@ -1,32 +1,21 @@
-// import { transformRedisJsonArgument } from '.';
+import { RedisArgument, Command, NullReply, NumberReply, ArrayReply } from '@redis/client/dist/lib/RESP/types';
 
-// export const FIRST_KEY_INDEX = 1;
-
-// type AppendArguments = [key: string, append: string];
-
-// type AppendWithPathArguments = [key: string, path: string, append: string];
-
-// export function transformArguments(...[key, pathOrAppend, append]: AppendArguments | AppendWithPathArguments): Array<string> {
-//     const args = ['JSON.STRAPPEND', key];
-
-//     if (append !== undefined && append !== null) {
-//         args.push(pathOrAppend, transformRedisJsonArgument(append));
-//     } else {
-//         args.push(transformRedisJsonArgument(pathOrAppend));
-//     }
-
-//     return args;
-// }
-
-// export declare function transformReply(): number | Array<number>;
-
-import { SimpleStringReply, Command } from '@redis/client/dist/lib/RESP/types';
+export interface JsonStrAppendOptions {
+  path?: RedisArgument;
+}
 
 export default {
   FIRST_KEY_INDEX: 1,
   IS_READ_ONLY: false,
-  transformArguments() {
-    return ['JSON.STRAPPEND'];
+  transformArguments(key: RedisArgument, append: RedisArgument, options?: JsonStrAppendOptions) {
+    const args = ['JSON.STRAPPEND', key];
+
+    if (options?.path) {
+      args.push(options.path);
+    }
+
+    args.push(append);
+    return args;
   },
-  transformReply: undefined as unknown as () => SimpleStringReply
+  transformReply: undefined as unknown as () => NumberReply | ArrayReply<NullReply | NumberReply>
 } as const satisfies Command;