diff --git a/listener/greenfield_listener.go b/listener/greenfield_listener.go
index 59a270c..c75d20b 100644
--- a/listener/greenfield_listener.go
+++ b/listener/greenfield_listener.go
@@ -184,7 +184,7 @@ func (l *GreenfieldListener) monitorValidatorsHelper(block *tmtypes.Block) error
 		return err
 	}
 
-	curValidators, err := l.greenfieldExecutor.QueryValidatorsAtHeight(lightClientLatestHeight)
+	curValidators, err := l.greenfieldExecutor.QueryValidatorsAtHeight(nextHeight - 1)
 	if err != nil {
 		return err
 	}