diff --git a/data/interface.go b/data/interface.go
index ee2f0ed0..8ad08d52 100644
--- a/data/interface.go
+++ b/data/interface.go
@@ -115,6 +115,7 @@ type SovereignChainHeaderHandler interface {
 	GetShardInfoHandlers() []ShardDataHandler
 	SetShardInfoHandlers(shardInfo []ShardDataHandler) error
 	GetLastFinalizedCrossChainHeaderHandler() EpochStartChainDataHandler
+	SetLastFinalizedCrossChainHeaderHandler(crossChainData EpochStartChainDataHandler) error
 }
 
 // OutGoingMiniBlockHeaderHandler defines setters and getters for sovereign outgoing mini block header