Issue #1361

app/models/communication/block/template/agenda.rb

@@ -17,6 +17,10 @@ class Communication::Block::Template::Agenda < Communication::Block::Template::B
     @selected_events ||= events_with_time_scope
   end
 
+  def dependencies
+    selected_events
+  end
+
   def allowed_for_about?
     website.present?
   end

app/models/communication/website/agenda/event.rb

@@ -124,6 +124,11 @@ class Communication::Website::Agenda::Event < ApplicationRecord
     blocks
   end
 
+  def references
+    menus +
+    abouts_with_agenda_block
+  end
+
   def to_s
     "#{title}"
   end
@@ -142,4 +147,8 @@ class Communication::Website::Agenda::Event < ApplicationRecord
   def explicit_blob_ids
     super.concat [featured_image&.blob_id]
   end
+
+  def abouts_with_agenda_block
+    website.blocks.agenda.collect(&:about)
+  end
 end