diff --git a/src/service.cr b/src/service.cr
index a450888..22e3c90 100644
--- a/src/service.cr
+++ b/src/service.cr
@@ -24,9 +24,9 @@ class AuthD::Service < IPC
 
 	# DB and its indexes.
 	property users           : DODB::Storage::Cached(User)
-	property users_per_uid   : DODB::Trigger(User)
-	property users_per_login : DODB::Trigger(User)
-	property users_per_email : DODB::Trigger(User)
+	property users_per_uid   : DODB::Trigger::IndexCached(User)
+	property users_per_login : DODB::Trigger::IndexCached(User)
+	property users_per_email : DODB::Trigger::IndexCached(User)
 
 	property logged_users    : Hash(Int32, AuthD::User::Public)