diff --git a/src/accounts/migrations/0006_auto__add_field_user_modified.py b/src/accounts/migrations/0006_auto__add_field_user_modified.py
new file mode 100644
index 0000000..7ed8115
--- /dev/null
+++ b/src/accounts/migrations/0006_auto__add_field_user_modified.py
@@ -0,0 +1,69 @@
+# -*- coding: utf-8 -*-
+from south.db import db
+from south.v2 import SchemaMigration
+from django.db import models
+from django.utils import timezone
+
+
+class Migration(SchemaMigration):
+
+    def forwards(self, orm):
+        # Adding field 'User.modified'
+        db.add_column(u'accounts_user', 'modified',
+                      self.gf('django.db.models.fields.DateTimeField')(auto_now=True, default=timezone.now, blank=True),
+                      keep_default=False)
+
+
+    def backwards(self, orm):
+        # Deleting field 'User.modified'
+        db.delete_column(u'accounts_user', 'modified')
+
+
+    models = {
+        u'accounts.user': {
+            'Meta': {'object_name': 'User'},
+            'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'email': ('django.db.models.fields.EmailField', [], {'unique': 'True', 'max_length': '75', 'blank': 'True'}),
+            'facebook': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'google_talk': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'null': 'True', 'blank': 'True'}),
+            'groups': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "u'user_set'", 'blank': 'True', 'to': u"orm['auth.Group']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'institution': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
+            'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}),
+            'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}),
+            'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}),
+            'modified': ('django.db.models.fields.DateTimeField', [], {'auto_now': 'True', 'blank': 'True'}),
+            'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}),
+            'role': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'twitter': ('django.db.models.fields.CharField', [], {'max_length': '128', 'null': 'True', 'blank': 'True'}),
+            'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'symmetrical': 'False', 'related_name': "u'user_set'", 'blank': 'True', 'to': u"orm['auth.Permission']"}),
+            'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'}),
+            'verification_hash': ('django.db.models.fields.CharField', [], {'max_length': '32', 'null': 'True', 'blank': 'True'}),
+            'webpage': ('django.db.models.fields.CharField', [], {'max_length': '256', 'null': 'True', 'blank': 'True'})
+        },
+        u'auth.group': {
+            'Meta': {'object_name': 'Group'},
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}),
+            'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': u"orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'})
+        },
+        u'auth.permission': {
+            'Meta': {'ordering': "(u'content_type__app_label', u'content_type__model', u'codename')", 'unique_together': "((u'content_type', u'codename'),)", 'object_name': 'Permission'},
+            'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': u"orm['contenttypes.ContentType']"}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '50'})
+        },
+        u'contenttypes.contenttype': {
+            'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
+            'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            u'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
+            'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
+            'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
+        }
+    }
+
+    complete_apps = ['accounts']
diff --git a/src/accounts/models.py b/src/accounts/models.py
index 24bf0d4..fe0ae45 100644
--- a/src/accounts/models.py
+++ b/src/accounts/models.py
@@ -16,6 +16,7 @@ class User(AbstractUser):
     google_talk = models.EmailField(null=True, blank=True)
     webpage = models.CharField(max_length=256, null=True, blank=True)
     verification_hash = models.CharField(max_length=32, null=True, blank=True)
+    modified = models.DateTimeField(auto_now=True)
 
     def get_absolute_url(self):
         return reverse('user_profile', kwargs={'username': self.username})
diff --git a/src/accounts/search_indexes.py b/src/accounts/search_indexes.py
index ad1d9a8..e13d344 100644
--- a/src/accounts/search_indexes.py
+++ b/src/accounts/search_indexes.py
@@ -42,7 +42,7 @@ class UserIndex(indexes.SearchIndex, indexes.Indexable):
         return self._badge_counters
 
     def get_updated_field(self):
-        return 'date_joined'
+        return 'modified'
 
     def prepare(self, obj):
         prepared_data = super(UserIndex, self).prepare(obj)
--
libgit2 0.21.2