diff --git a/db/dojo_event_services.yaml b/db/dojo_event_services.yaml
index 88d3b8530..e5b05dfa0 100644
--- a/db/dojo_event_services.yaml
+++ b/db/dojo_event_services.yaml
@@ -99,10 +99,9 @@
   group_id: 617011185103868
   url: https://www.facebook.com/pg/CoderDojoTokorozawa/events/?ref=page_internal
 - dojo_id: 13
-  name: connpass
-  group_id: 2396
-  # https://coderdojokodaira-ninja.connpass.com/event/ もあるが2017/06~のみ
-  url: https://coderdojo-kodaira.connpass.com/
+  name: static_yaml
+  group_id:
+  url:
 - dojo_id: 14
   name: peatix
   group_id:
diff --git a/lib/statistics/tasks/static_yaml.rb b/lib/statistics/tasks/static_yaml.rb
index 61ab639a4..a783d4b52 100644
--- a/lib/statistics/tasks/static_yaml.rb
+++ b/lib/statistics/tasks/static_yaml.rb
@@ -17,7 +17,7 @@ def run
           next unless dojo
 
           evented_at = Time.zone.parse(e['evented_at'])
-          event_id = "#{dojo.id}_#{evented_at.to_i}"
+          event_id = "#{SecureRandom.uuid}"
 
           EventHistory.create!(dojo_id: dojo.id,
                                dojo_name: dojo.name,