diff --git a/Gemfile.lock b/Gemfile.lock
index f56e0758..55b474f0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -376,8 +376,8 @@ GEM
       method_source (~> 0.8.1)
       slop (~> 3.4)
     public_suffix (3.1.1)
-    puma (3.12.4)
-    rack (2.0.8)
+    puma (3.12.6)
+    rack (2.1.4)
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
@@ -599,7 +599,7 @@ GEM
       hashdiff
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.4)
+    websocket-extensions (0.1.5)
     whenever (0.10.0)
       chronic (>= 0.6.3)
     xpath (3.2.0)
diff --git a/app/datatables/user_datatable.rb b/app/datatables/user_datatable.rb
index a01e7e12..6c7e835e 100644
--- a/app/datatables/user_datatable.rb
+++ b/app/datatables/user_datatable.rb
@@ -1,3 +1,4 @@
+
 # frozen_string_literal: true
 
 class UserDatatable < AjaxDatatablesRails::Base
@@ -40,20 +41,21 @@ class UserDatatable < AjaxDatatablesRails::Base
 
   # rubocop:disable Naming/AccessorMethodName
   def get_raw_records
-    User.left_outer_joins(:registrations, :roles).select(
-        "DISTINCT users.id, users.name, users.email, users.confirmed_at, COUNT(CASE WHEN registrations.attended = 't' THEN 1 END) AS attended_count"
-      ).group(
-        'users.id, users.name, users.email, users.confirmed_at'
-      )
+    User.left_outer_joins(:registrations, :roles)
+      .distinct
+      .select("users.*, COUNT(CASE WHEN registrations.attended = 't' THEN 1 END) AS attended_count")
+      .group('users.id')
   end
   # rubocop:enable Naming/AccessorMethodName
 
+  # Workaround for jbox-web/ajax-datatables-rails#293
   def records_total_count
-    fetch_records.unscoped.count(:id)
+    fetch_records.unscope(:group, :select).count(:all)
   end
 
+  # Workaround for jbox-web/ajax-datatables-rails#293
   def records_filtered_count
-    filter_records(fetch_records).unscoped.count
+    filter_records(fetch_records).unscope(:group, :select).count(:all)
   end
 
   # ==== These methods represent the basic operations to perform on records
@@ -69,4 +71,4 @@ class UserDatatable < AjaxDatatablesRails::Base
   # end
 
   # ==== Insert 'presenter'-like methods below if necessary
-end
+end
\ No newline at end of file