diff --git a/connection.ts b/connection.ts
index 52c6d492..c571aad2 100644
--- a/connection.ts
+++ b/connection.ts
@@ -30,7 +30,7 @@ import { BufReader, BufWriter } from "./deps.ts";
 import { PacketWriter } from "./packet_writer.ts";
 import { hashMd5Password, readUInt32BE } from "./utils.ts";
 import { PacketReader } from "./packet_reader.ts";
-import { QueryConfig, QueryResult, Query } from "./query.ts";
+import { Query, QueryConfig, QueryResult } from "./query.ts";
 import { parseError } from "./error.ts";
 import type { ConnectionParams } from "./connection_params.ts";
 import { DeferredStack } from "./deferred.ts";
diff --git a/decode.ts b/decode.ts
index 192495ca..3e32098f 100644
--- a/decode.ts
+++ b/decode.ts
@@ -195,6 +195,10 @@ function decodeIntArray(value: string): any {
   return parseArray(value, decodeBaseTenInt);
 }
 
+function decodeJsonArray(value: string): unknown[] {
+  return parseArray(value, JSON.parse);
+}
+
 // deno-lint-ignore no-explicit-any
 function decodeText(value: Uint8Array, typeOid: number): any {
   const strValue = decoder.decode(value);
@@ -253,6 +257,9 @@ function decodeText(value: Uint8Array, typeOid: number): any {
     case Oid.json:
     case Oid.jsonb:
       return JSON.parse(strValue);
+    case Oid.json_array:
+    case Oid.jsonb_array:
+      return decodeJsonArray(strValue);
     case Oid.bytea:
       return decodeBytea(strValue);
     default:
diff --git a/deps.ts b/deps.ts
index fbd99e49..fdb5cc5b 100644
--- a/deps.ts
+++ b/deps.ts
@@ -1,7 +1,4 @@
-export {
-  BufReader,
-  BufWriter,
-} from "https://deno.land/std@0.69.0/io/bufio.ts";
+export { BufReader, BufWriter } from "https://deno.land/std@0.69.0/io/bufio.ts";
 export { copyBytes } from "https://deno.land/std@0.67.0/bytes/mod.ts";
 export { deferred } from "https://deno.land/std@0.69.0/async/deferred.ts";
 export type { Deferred } from "https://deno.land/std@0.69.0/async/deferred.ts";
diff --git a/oid.ts b/oid.ts
index 5bdbb8cd..300407d8 100644
--- a/oid.ts
+++ b/oid.ts
@@ -23,7 +23,7 @@ export const Oid = {
   xml: 142,
   _xml: 143,
   pg_node_tree: 194,
-  _json: 199,
+  json_array: 199,
   smgr: 210,
   index_am_handler: 325,
   point: 600,
@@ -146,7 +146,7 @@ export const Oid = {
   regdictionary: 3769,
   _regdictionary: 3770,
   jsonb: 3802,
-  _jsonb: 3807,
+  jsonb_array: 3807,
   anyrange: 3831,
   event_trigger: 3838,
   int4range: 3904,
diff --git a/tests/data_types.ts b/tests/data_types.ts
index 46feb2a1..e30a185b 100644
--- a/tests/data_types.ts
+++ b/tests/data_types.ts
@@ -267,3 +267,37 @@ testClient(async function bpcharNestedArray() {
   );
   assertEquals(result.rows[0], [[["AB1234"], ["4321BA"]]]);
 });
+
+testClient(async function jsonArray() {
+  const json_array = await CLIENT.query(
+    `SELECT ARRAY_AGG(A) FROM  (
+      SELECT JSON_BUILD_OBJECT( 'X', '1' ) AS A
+      UNION ALL
+      SELECT JSON_BUILD_OBJECT( 'Y', '2' ) AS A
+    )	A`,
+  );
+
+  assertEquals(json_array.rows[0][0], [{ X: "1" }, { Y: "2" }]);
+
+  const json_array_nested = await CLIENT.query(
+    `SELECT ARRAY[ARRAY[ARRAY_AGG(A), ARRAY_AGG(A)], ARRAY[ARRAY_AGG(A), ARRAY_AGG(A)]] FROM  (
+      SELECT JSON_BUILD_OBJECT( 'X', '1' ) AS A
+      UNION ALL
+      SELECT JSON_BUILD_OBJECT( 'Y', '2' ) AS A
+    )	A`,
+  );
+
+  assertEquals(
+    json_array_nested.rows[0][0],
+    [
+      [
+        [{ X: "1" }, { Y: "2" }],
+        [{ X: "1" }, { Y: "2" }],
+      ],
+      [
+        [{ X: "1" }, { Y: "2" }],
+        [{ X: "1" }, { Y: "2" }],
+      ],
+    ],
+  );
+});
diff --git a/tests/pool.ts b/tests/pool.ts
index 09df7959..dd941b76 100644
--- a/tests/pool.ts
+++ b/tests/pool.ts
@@ -1,10 +1,7 @@
-import {
-  assertEquals,
-  assertThrowsAsync,
-} from "../test_deps.ts";
+import { assertEquals, assertThrowsAsync } from "../test_deps.ts";
 import { Pool } from "../pool.ts";
 import { delay } from "../utils.ts";
-import { TEST_CONNECTION_PARAMS, DEFAULT_SETUP } from "./constants.ts";
+import { DEFAULT_SETUP, TEST_CONNECTION_PARAMS } from "./constants.ts";
 
 async function testPool(
   t: (pool: Pool) => void | Promise<void>,
diff --git a/tests/utils.ts b/tests/utils.ts
index 2b022f4b..d0fd81a1 100644
--- a/tests/utils.ts
+++ b/tests/utils.ts
@@ -1,6 +1,6 @@
 const { test } = Deno;
 import { assertEquals } from "../test_deps.ts";
-import { parseDsn, DsnResult } from "../utils.ts";
+import { DsnResult, parseDsn } from "../utils.ts";
 
 test("testParseDsn", function () {
   let c: DsnResult;