diff --git a/apps/library/migrations/0004_alter_author_slug_alter_book_slug_and_more.py b/apps/library/migrations/0004_alter_author_slug_alter_book_slug_and_more.py
new file mode 100644
index 0000000..c4c0ae7
--- /dev/null
+++ b/apps/library/migrations/0004_alter_author_slug_alter_book_slug_and_more.py
@@ -0,0 +1,33 @@
+# Generated by Django 5.2.12 on 2026-07-01 15:51
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('library', '0003_alter_book_author'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='author',
+            name='slug',
+            field=models.SlugField(blank=True, max_length=255, null=True, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='book',
+            name='slug',
+            field=models.SlugField(blank=True, max_length=255, null=True, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='bookcollection',
+            name='slug',
+            field=models.SlugField(blank=True, max_length=255, null=True, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='category',
+            name='slug',
+            field=models.SlugField(blank=True, max_length=255, null=True, unique=True),
+        ),
+    ]
diff --git a/apps/library/models.py b/apps/library/models.py
index 4a0509f..6f38363 100644
--- a/apps/library/models.py
+++ b/apps/library/models.py
@@ -17,7 +17,7 @@ class BookCollection(models.Model):
         # BOTTOM = 'bottom', _('Bottom Section')
 
     title = models.CharField(max_length=255)
-    slug = models.SlugField(max_length=255, unique=True)
+    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)
     summary = models.CharField(max_length=512, null=True, blank=True, help_text=_('could be null'))
     pin_top = models.BooleanField(_('pin top'), default=True)
     display_position = models.CharField(
@@ -68,7 +68,7 @@ class MiddleBookCollection(BookCollection):
 
 class Category(models.Model):
     title = models.CharField(max_length=255)
-    slug = models.SlugField(max_length=255, unique=True)
+    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)
     status = models.BooleanField(default=True, verbose_name=_('status'))
     # books = models.ManyToManyField('library.Book', related_name='related_categories_books',through="library.Book_categories" ,verbose_name=_('Books'), blank=True)
 
@@ -95,7 +95,7 @@ class Category(models.Model):
 
 class Author(models.Model):
     full_name = models.CharField(max_length=255, verbose_name=_('Full Name'))
-    slug = models.SlugField(max_length=255, unique=True)
+    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)
     thumbnail = models.ImageField(
         upload_to='author_thumbnails/',
         null=True,
@@ -133,7 +133,7 @@ class Book(models.Model):
         docx = 'docx', 'Docx'
 
     title = models.CharField(max_length=255)
-    slug = models.SlugField(max_length=255, unique=True)
+    slug = models.SlugField(max_length=255, unique=True, blank=True, null=True)
     slogan = models.CharField(max_length=300, blank=True, null=True)
     
     summary_title = models.CharField(max_length=512, null=True, blank=True, help_text=_('Summary Title'))
diff --git a/apps/library/serializers_admin.py b/apps/library/serializers_admin.py
index bd94fa6..531a407 100644
--- a/apps/library/serializers_admin.py
+++ b/apps/library/serializers_admin.py
@@ -137,6 +137,8 @@ class AdminBookDetailSerializer(serializers.ModelSerializer):
         required=False
     )
 
+    bookmark_count = serializers.SerializerMethodField()
+
     class Meta:
         model = Book
         fields = [
@@ -162,6 +164,7 @@ class AdminBookDetailSerializer(serializers.ModelSerializer):
             "pin",
             "view_count",
             "download_count",
+            "bookmark_count",
             "file_type",
             "book_file",
             "created_at",
@@ -173,7 +176,11 @@ class AdminBookDetailSerializer(serializers.ModelSerializer):
             "remove_thumbnail",
             "remove_book_file",
         ]
-        read_only_fields = ["id", "view_count", "download_count", "created_at", "updated_at"]
+        read_only_fields = ["id", "view_count", "download_count", "bookmark_count", "created_at", "updated_at"]
+
+    def get_bookmark_count(self, obj):
+        from apps.bookmark.models.bookmark import Bookmark
+        return Bookmark.objects.filter(service=Bookmark.ServiceChoices.LIBRARY, content_id=obj.id, status=True).count()
 
     def create(self, validated_data):
         validated_data.pop("remove_thumbnail", False)