diff --git a/src/agenda_culturel/migrations/0101_alter_tag_category.py b/src/agenda_culturel/migrations/0101_alter_tag_category.py
new file mode 100644
index 0000000..290741f
--- /dev/null
+++ b/src/agenda_culturel/migrations/0101_alter_tag_category.py
@@ -0,0 +1,19 @@
+# Generated by Django 4.2.9 on 2024-11-02 14:13
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('agenda_culturel', '0100_tag_category'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='tag',
+            name='category',
+            field=models.ForeignKey(blank=True, default=None, help_text='This tags corresponds to a sub-category of the given category', null=True, on_delete=django.db.models.deletion.SET_NULL, to='agenda_culturel.category', verbose_name='Category'),
+        ),
+    ]
diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index 80c9ce6..969ed3b 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -191,6 +191,7 @@ class Tag(models.Model):
         verbose_name=_("Category"),
         help_text=_("This tags corresponds to a sub-category of the given category"),
         null=True,
+        blank=True,
         default=None,
         on_delete=models.SET_NULL,
     )