diff --git a/test/orm/model_has_many.spec.ts b/test/orm/model_has_many.spec.ts
index c275a220..050d6637 100644
--- a/test/orm/model_has_many.spec.ts
+++ b/test/orm/model_has_many.spec.ts
@@ -3729,27 +3729,27 @@ if (process.env.DB !== 'mysql_legacy') {
           {
             user_id: user0.id,
             title: 'Adonis 101',
-            created_at: now,
+            created_at: now.toISO(),
           },
           {
             user_id: user0.id,
             title: 'Adonis 102',
-            created_at: now.plus({ seconds: 1 }),
+            created_at: now.plus({ seconds: 1 }).toISO(),
           },
           {
             user_id: user0.id,
             title: 'Adonis 103',
-            created_at: now.plus({ seconds: 2 }),
+            created_at: now.plus({ seconds: 2 }).toISO(),
           },
           {
             user_id: user0.id,
             title: 'Adonis 104',
-            created_at: now.plus({ seconds: 3 }),
+            created_at: now.plus({ seconds: 3 }).toISO(),
           },
           {
             user_id: user0.id,
             title: 'Adonis 105',
-            created_at: now.plus({ seconds: 4 }),
+            created_at: now.plus({ seconds: 4 }).toISO(),
           },
         ])
 
@@ -3763,27 +3763,27 @@ if (process.env.DB !== 'mysql_legacy') {
           {
             user_id: user1.id,
             title: 'Lucid 101',
-            created_at: now,
+            created_at: now.toISO(),
           },
           {
             user_id: user1.id,
             title: 'Lucid 102',
-            created_at: now.plus({ seconds: 1 }),
+            created_at: now.plus({ seconds: 1 }).toISO(),
           },
           {
             user_id: user1.id,
             title: 'Lucid 103',
-            created_at: now.plus({ seconds: 2 }),
+            created_at: now.plus({ seconds: 2 }).toISO(),
           },
           {
             user_id: user1.id,
             title: 'Lucid 104',
-            created_at: now.plus({ seconds: 3 }),
+            created_at: now.plus({ seconds: 3 }).toISO(),
           },
           {
             user_id: user1.id,
             title: 'Lucid 105',
-            created_at: now.plus({ seconds: 4 }),
+            created_at: now.plus({ seconds: 4 }).toISO(),
           },
         ])