diff --git a/judge/models/profile.py b/judge/models/profile.py
index 412e77b..3339791 100644
--- a/judge/models/profile.py
+++ b/judge/models/profile.py
@@ -157,11 +157,9 @@ class Organization(models.Model):
     def get_submissions_url(self):
         return reverse("organization_submissions", args=(self.id, self.slug))
 
-    @cache_wrapper("Oia")
     def is_admin(self, profile):
         return self.admins.filter(id=profile.id).exists()
 
-    @cache_wrapper("Oim")
     def is_member(self, profile):
         return profile in self
 
diff --git a/judge/signals.py b/judge/signals.py
index c3029bb..a9417bf 100644
--- a/judge/signals.py
+++ b/judge/signals.py
@@ -142,8 +142,6 @@ def contest_submission_delete(sender, instance, **kwargs):
 @receiver(post_save, sender=Organization)
 def organization_update(sender, instance, **kwargs):
     cache.delete_many([make_template_fragment_key("organization_html", (instance.id,))])
-    for admin in instance.admins.all():
-        Organization.is_admin.dirty(instance, admin)
 
 
 _misc_config_i18n = [code for code, _ in settings.LANGUAGES]
diff --git a/judge/views/organization.py b/judge/views/organization.py
index 788a1b4..882c820 100644
--- a/judge/views/organization.py
+++ b/judge/views/organization.py
@@ -580,7 +580,6 @@ class JoinOrganization(OrganizationMembershipChange):
         profile.organizations.add(org)
         profile.save()
         cache.delete(make_template_fragment_key("org_member_count", (org.id,)))
-        Organization.is_member.dirty(org, profile)
 
 
 class LeaveOrganization(OrganizationMembershipChange):
@@ -593,7 +592,6 @@ class LeaveOrganization(OrganizationMembershipChange):
             )
         profile.organizations.remove(org)
         cache.delete(make_template_fragment_key("org_member_count", (org.id,)))
-        Organization.is_member.dirty(org, profile)
 
 
 class OrganizationRequestForm(Form):