diff --git a/lib/test.js b/lib/test.js
index 87c9491..58fa87c 100644
--- a/lib/test.js
+++ b/lib/test.js
@@ -7,7 +7,7 @@
 const { inspect } = require('util');
 const { STATUS_CODES } = require('http');
 const { Server } = require('https');
-const assert = require('assert');
+const { deepStrictEqual } = require('assert');
 const { Request } = require('superagent');
 
 class Test extends Request {
@@ -186,7 +186,7 @@ class Test extends Request {
     // parsed
     if (typeof body === 'object' && !isRegexp) {
       try {
-        assert.deepStrictEqual(body, res.body);
+        deepStrictEqual(body, res.body);
       } catch (err) {
         const a = inspect(body);
         const b = inspect(res.body);