diff --git a/apps/member/models.py b/apps/member/models.py
index 50b0bea1..5cdc4c77 100644
--- a/apps/member/models.py
+++ b/apps/member/models.py
@@ -46,6 +46,7 @@ class Profile(models.Model):
     class Meta:
         verbose_name = _('user profile')
         verbose_name_plural = _('user profile')
+        indexes = [ models.Index(fields=['user']) ]
 
     def get_absolute_url(self):
         return reverse('user_detail', args=(self.pk,))
@@ -152,6 +153,7 @@ class Membership(models.Model):
     class Meta:
         verbose_name = _('membership')
         verbose_name_plural = _('memberships')
+        indexes = [ models.Index(fields=['user']) ]
 
 # @receiver(post_save, sender=settings.AUTH_USER_MODEL)
 # def save_user_profile(instance, created, **_kwargs):
diff --git a/apps/note/models/notes.py b/apps/note/models/notes.py
index 74cda3ea..70810ad8 100644
--- a/apps/note/models/notes.py
+++ b/apps/note/models/notes.py
@@ -209,6 +209,10 @@ class Alias(models.Model):
     class Meta:
         verbose_name = _("alias")
         verbose_name_plural = _("aliases")
+        indexes = [
+            models.Index(fields=['name']),
+            models.Index(fields=['normalized_name']),
+        ]
 
     def __str__(self):
         return self.name
diff --git a/apps/note/models/transactions.py b/apps/note/models/transactions.py
index 3bb7ca76..809e7c44 100644
--- a/apps/note/models/transactions.py
+++ b/apps/note/models/transactions.py
@@ -119,6 +119,11 @@ class Transaction(PolymorphicModel):
     class Meta:
         verbose_name = _("transaction")
         verbose_name_plural = _("transactions")
+        indexes = [
+            models.Index(fields=['created_at']),
+            models.Index(fields=['source']),
+            models.Index(fields=['destination']),
+        ]
 
     def save(self, *args, **kwargs):
         """