diff --git a/lib/event_service/client.rb b/lib/event_service/client.rb
index 98260be0f..25bb169b1 100644
--- a/lib/event_service/client.rb
+++ b/lib/event_service/client.rb
@@ -23,6 +23,8 @@ def connection_for(endpoint)
 
         f.adapter  Faraday.default_adapter
       end
+      # connpass は https://connpass.com/robots.txt を守らない場合は、アクセス制限を施すので、下記の sleep を入れるようにした https://connpass.com/about/api/
+      sleep 5 if endpoint.include?(EventService::Providers::Connpass::ENDPOINT)
     end
   end
 end