diff --git a/bridge/watcher/batch_proposer.go b/bridge/watcher/batch_proposer.go
index c338f5cc6..cf59ef095 100644
--- a/bridge/watcher/batch_proposer.go
+++ b/bridge/watcher/batch_proposer.go
@@ -25,9 +25,11 @@ var (
 	bridgeL2BatchesTxsOverThresholdTotalCounter = geth_metrics.NewRegisteredCounter("bridge/l2/batches/txs/over/threshold/total", metrics.ScrollRegistry)
 	bridgeL2BatchesBlocksCreatedTotalCounter    = geth_metrics.NewRegisteredCounter("bridge/l2/batches/blocks/created/total", metrics.ScrollRegistry)
 	bridgeL2BatchesCommitsSentTotalCounter      = geth_metrics.NewRegisteredCounter("bridge/l2/batches/commits/sent/total", metrics.ScrollRegistry)
+	bridgeL2BatchesOversizedTotalCounter        = geth_metrics.NewRegisteredCounter("bridge/l2/batches/oversized/total", metrics.ScrollRegistry)
 
-	bridgeL2BatchesTxsCreatedPerBatchGauge = geth_metrics.NewRegisteredGauge("bridge/l2/batches/txs/created/per/batch", metrics.ScrollRegistry)
-	bridgeL2BatchesGasCreatedPerBatchGauge = geth_metrics.NewRegisteredGauge("bridge/l2/batches/gas/created/per/batch", metrics.ScrollRegistry)
+	bridgeL2BatchesTxsCreatedPerBatchGauge  = geth_metrics.NewRegisteredGauge("bridge/l2/batches/txs/created/per/batch", metrics.ScrollRegistry)
+	bridgeL2BatchesGasCreatedPerBatchGauge  = geth_metrics.NewRegisteredGauge("bridge/l2/batches/gas/created/per/batch", metrics.ScrollRegistry)
+	bridgeL2BatchesPayloadSizePerBatchGauge = geth_metrics.NewRegisteredGauge("bridge/l2/batches/payload/size/per/batch", metrics.ScrollRegistry)
 )
 
 // AddBatchInfoToDB inserts the batch information to the BlockBatch table and updates the batch_hash
@@ -297,7 +299,9 @@ func (p *BatchProposer) proposeBatch(blocks []*types.BlockInfo) bool {
 		}
 		bridgeL2BatchesTxsCreatedPerBatchGauge.Update(int64(blocks[0].TxNum))
 		bridgeL2BatchesGasCreatedPerBatchGauge.Update(int64(blocks[0].GasUsed))
+		bridgeL2BatchesPayloadSizePerBatchGauge.Update(int64(firstSize))
 		bridgeL2BatchesBlocksCreatedTotalCounter.Inc(1)
+		bridgeL2BatchesOversizedTotalCounter.Inc(1)
 		return true
 	}
 
@@ -309,6 +313,7 @@ func (p *BatchProposer) proposeBatch(blocks []*types.BlockInfo) bool {
 		} else {
 			bridgeL2BatchesTxsCreatedPerBatchGauge.Update(int64(blocks[0].TxNum))
 			bridgeL2BatchesGasCreatedPerBatchGauge.Update(int64(blocks[0].GasUsed))
+			bridgeL2BatchesPayloadSizePerBatchGauge.Update(int64(firstSize))
 			bridgeL2BatchesBlocksCreatedTotalCounter.Inc(1)
 		}
 		return true
@@ -322,6 +327,7 @@ func (p *BatchProposer) proposeBatch(blocks []*types.BlockInfo) bool {
 		} else {
 			bridgeL2BatchesTxsCreatedPerBatchGauge.Update(int64(blocks[0].TxNum))
 			bridgeL2BatchesGasCreatedPerBatchGauge.Update(int64(blocks[0].GasUsed))
+			bridgeL2BatchesPayloadSizePerBatchGauge.Update(int64(firstSize))
 			bridgeL2BatchesBlocksCreatedTotalCounter.Inc(1)
 		}
 		return true
@@ -359,6 +365,7 @@ func (p *BatchProposer) proposeBatch(blocks []*types.BlockInfo) bool {
 	} else {
 		bridgeL2BatchesTxsCreatedPerBatchGauge.Update(int64(txNum))
 		bridgeL2BatchesGasCreatedPerBatchGauge.Update(int64(gasUsed))
+		bridgeL2BatchesPayloadSizePerBatchGauge.Update(int64(payloadSize))
 		bridgeL2BatchesBlocksCreatedTotalCounter.Inc(int64(len(blocks)))
 	}
 
diff --git a/common/version/version.go b/common/version/version.go
index 2a1b7c7f3..1b51c90b3 100644
--- a/common/version/version.go
+++ b/common/version/version.go
@@ -5,7 +5,7 @@ import (
 	"runtime/debug"
 )
 
-var tag = "v3.1.0"
+var tag = "v3.1.1"
 
 var commit = func() string {
 	if info, ok := debug.ReadBuildInfo(); ok {