diff --git a/project/migrations/0046_alter_project_mentor_alter_project_mentor_url.py b/project/migrations/0046_alter_project_mentor_alter_project_mentor_url.py
new file mode 100644
index 0000000..ace14aa
--- /dev/null
+++ b/project/migrations/0046_alter_project_mentor_alter_project_mentor_url.py
@@ -0,0 +1,23 @@
+# Generated by Django 4.1 on 2024-10-28 06:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('project', '0045_alter_project_description'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='project',
+            name='mentor',
+            field=models.CharField(default='hex', max_length=200, verbose_name='Mentor'),
+        ),
+        migrations.AlterField(
+            model_name='project',
+            name='mentor_url',
+            field=models.URLField(default='', verbose_name='MENTOR URL'),
+        ),
+    ]
diff --git a/project/models.py b/project/models.py
index bda9795..8ea4725 100644
--- a/project/models.py
+++ b/project/models.py
@@ -1,7 +1,7 @@
 from django.db import models
 from django.contrib.auth import get_user_model
 from contrihub.settings import MAX_SIMULTANEOUS_ISSUE, DAYS_PER_ISSUE_FREE, DAYS_PER_ISSUE_EASY, \
-    DAYS_PER_ISSUE_MEDIUM, DAYS_PER_ISSUE_HARD, DAYS_PER_ISSUE_VERY_EASY
+    DAYS_PER_ISSUE_MEDIUM, DAYS_PER_ISSUE_HARD, DAYS_PER_ISSUE_VERY_EASY, CONTRIHUB_MENTOR, CONTRIHUB_MENTOR_URL
 from django.utils import timezone
 from user_profile.models import UserProfile
 
@@ -27,8 +27,8 @@ def __str__(self):
 class Project(models.Model):
     name = models.CharField(verbose_name="Name", max_length=200)
     description = models.TextField(verbose_name="Project Description", default="", null=True)
-    mentor = models.CharField(verbose_name="Mentor", max_length=200, default=None)
-    mentor_url = models.URLField(verbose_name="MENTOR URL", default=None)
+    mentor = models.CharField(verbose_name="Mentor", max_length=200, default="")
+    mentor_url = models.URLField(verbose_name="MENTOR URL", default="")
 
     api_url = models.URLField(verbose_name="API URL")