diff --git a/packages/json/lib/commands/ARRAPPEND.ts b/packages/json/lib/commands/ARRAPPEND.ts
index ce80987647..934a534cfc 100644
--- a/packages/json/lib/commands/ARRAPPEND.ts
+++ b/packages/json/lib/commands/ARRAPPEND.ts
@@ -1,5 +1,5 @@
 import { RedisJSON, transformRedisJsonArgument } from '.';
-import { RedisArgument, ArrayReply, NumberReply, Command } from '@redis/client/dist/lib/RESP/types';
+import { RedisArgument, ArrayReply, NumberReply, NullReply, Command } from '@redis/client/dist/lib/RESP/types';
 
 export default {
   FIRST_KEY_INDEX: 1,
@@ -13,5 +13,5 @@ export default {
 
     return args;
   },
-  transformReply: undefined as unknown as () => NumberReply | ArrayReply<NumberReply>
+  transformReply: undefined as unknown as () => NumberReply | NullReply | ArrayReply<NumberReply | NullReply>
 } as const satisfies Command;
diff --git a/packages/json/lib/commands/ARRINDEX.ts b/packages/json/lib/commands/ARRINDEX.ts
index 8c8c9e5df2..f085e1afb9 100644
--- a/packages/json/lib/commands/ARRINDEX.ts
+++ b/packages/json/lib/commands/ARRINDEX.ts
@@ -1,4 +1,4 @@
-import { RedisArgument, ArrayReply, NumberReply, Command } from '@redis/client/dist/lib/RESP/types';
+import { RedisArgument, ArrayReply, NumberReply, NullReply, Command } from '@redis/client/dist/lib/RESP/types';
 import { RedisJSON, transformRedisJsonArgument } from '.';
 
 export default {
@@ -23,5 +23,5 @@ export default {
 
     return args;
   },
-  transformReply: undefined as unknown as () => NumberReply | ArrayReply<NumberReply>
+  transformReply: undefined as unknown as () => NumberReply | NullReply | ArrayReply<NumberReply | NullReply>
 } as const satisfies Command;