diff --git a/lib/scheduler/manager.rb b/lib/scheduler/manager.rb
index 9102091ef..53e655c33 100644
--- a/lib/scheduler/manager.rb
+++ b/lib/scheduler/manager.rb
@@ -256,7 +256,7 @@ module Scheduler
     end
 
     def identity_key
-      @identity_key ||= "_scheduler_#{`hostname`}:#{Process.pid}:#{self.class.seq}"
+      @identity_key ||= "_scheduler_#{`hostname`}:#{Process.pid}:#{self.class.seq}:#{SecureRandom.hex}"
     end
 
     def self.lock_key