diff --git a/pkg/relay/ethereum/log.go b/pkg/relay/ethereum/log.go
index 506bfc2..8df6712 100644
--- a/pkg/relay/ethereum/log.go
+++ b/pkg/relay/ethereum/log.go
@@ -1,16 +1,21 @@
 package ethereum
 
 const (
-	logAttrMsgIndexFrom = "msg_index_from"
-	logAttrMsgCount     = "msg_count"
-	logAttrMsgType      = "msg_type"
-	logAttrRevertReason = "revert_reason"
-	logAttrRawErrorData = "raw_error_data"
-	logAttrRawTxData    = "raw_tx_data"
-	logAttrTxHash       = "tx_hash"
-	logAttrBlockHash    = "block_hash"
-	logAttrBlockNumber  = "block_number"
-	logAttrTxIndex      = "tx_index"
-	logAttrEstimatedGas = "estimated_gas"
-	logAttrMaxGasLimit  = "max_gas_limit"
+	logAttrMsgIndexFrom    = "msg_index_from"
+	logAttrMsgCount        = "msg_count"
+	logAttrMsgType         = "msg_type"
+	logAttrRevertReason    = "revert_reason"
+	logAttrRawErrorData    = "raw_error_data"
+	logAttrRawTxData       = "raw_tx_data"
+	logAttrTxHash          = "tx_hash"
+	logAttrBlockHash       = "block_hash"
+	logAttrBlockNumber     = "block_number"
+	logAttrTxIndex         = "tx_index"
+	logAttrEstimatedGas    = "estimated_gas"
+	logAttrMaxGasLimit     = "max_gas_limit"
+	logAttrPortID          = "port_id"
+	logAttrChannelID       = "channel_id"
+	logAttrUpgradeFields   = "upgrade_fields"
+	logAttrTimeout         = "timeout"
+	logAttrUpgradeSequence = "upgrade_sequence"
 )
diff --git a/pkg/relay/ethereum/upgrade.go b/pkg/relay/ethereum/upgrade.go
index 767c8c4..19d7a6d 100644
--- a/pkg/relay/ethereum/upgrade.go
+++ b/pkg/relay/ethereum/upgrade.go
@@ -2,10 +2,12 @@ package ethereum
 
 import (
 	"context"
+	"encoding/hex"
 	"fmt"
 
 	"github.com/datachainlab/ethereum-ibc-relay-chain/pkg/contract/iibcchannelupgradablemodule"
 	gethtypes "github.com/ethereum/go-ethereum/core/types"
+	"github.com/hyperledger-labs/yui-relayer/log"
 )
 
 func (c *Chain) ProposeUpgrade(
@@ -15,6 +17,14 @@ func (c *Chain) ProposeUpgrade(
 	upgradeFields iibcchannelupgradablemodule.UpgradeFieldsData,
 	timeout iibcchannelupgradablemodule.TimeoutData,
 ) error {
+	logger := c.GetChainLogger()
+	logger = &log.RelayLogger{Logger: logger.With(
+		logAttrPortID, portID,
+		logAttrChannelID, channelID,
+		logAttrUpgradeFields, upgradeFields,
+		logAttrTimeout, timeout,
+	)}
+
 	appAddr, err := c.ibcHandler.GetIBCModuleByChannel(c.CallOpts(ctx, 0), portID, channelID)
 	if err != nil {
 		return err
@@ -40,17 +50,8 @@ func (c *Chain) ProposeUpgrade(
 		upgradeFields,
 		timeout,
 	)
-	if err != nil {
-		return err
-	}
-
-	if receipt, err := c.client.WaitForReceiptAndGet(ctx, tx.Hash()); err != nil {
-		return err
-	} else if receipt.Status == gethtypes.ReceiptStatusFailed {
-		return fmt.Errorf("tx execution reverted")
-	}
 
-	return nil
+	return processSendTxResult(ctx, logger, c, tx, err)
 }
 
 func (c *Chain) AllowTransitionToFlushComplete(
@@ -59,6 +60,13 @@ func (c *Chain) AllowTransitionToFlushComplete(
 	channelID string,
 	upgradeSequence uint64,
 ) error {
+	logger := c.GetChainLogger()
+	logger = &log.RelayLogger{Logger: logger.With(
+		logAttrPortID, portID,
+		logAttrChannelID, channelID,
+		logAttrUpgradeSequence, upgradeSequence,
+	)}
+
 	appAddr, err := c.ibcHandler.GetIBCModuleByChannel(c.CallOpts(ctx, 0), portID, channelID)
 	if err != nil {
 		return err
@@ -87,9 +95,49 @@ func (c *Chain) AllowTransitionToFlushComplete(
 		return err
 	}
 
+	return processSendTxResult(ctx, logger, c, tx, err)
+}
+
+func processSendTxResult(ctx context.Context, logger *log.RelayLogger, c *Chain, tx *gethtypes.Transaction, err error) error {
+	if err != nil {
+		if revertReason, returnData, err := c.getRevertReasonFromRpcError(err); err != nil {
+			logger = &log.RelayLogger{Logger: logger.With(
+				logAttrRawErrorData, hex.EncodeToString(returnData),
+			)}
+			logger.Error("failed to get revert reason from RPC error", err)
+		} else {
+			logger = &log.RelayLogger{Logger: logger.With(
+				logAttrRevertReason, revertReason,
+				logAttrRawErrorData, hex.EncodeToString(returnData),
+			)}
+		}
+		logger.Error("failed to send tx", err)
+		return err
+	}
+
+	if rawTxData, err := tx.MarshalBinary(); err != nil {
+		logger.Error("failed to encode tx", err)
+	} else {
+		logger = &log.RelayLogger{Logger: logger.With(
+			logAttrRawTxData, hex.EncodeToString(rawTxData),
+		)}
+	}
+
 	if receipt, err := c.client.WaitForReceiptAndGet(ctx, tx.Hash()); err != nil {
+		logger.Error("failed to wait for tx receipt", err)
 		return err
 	} else if receipt.Status == gethtypes.ReceiptStatusFailed {
+		if revertReason, returnData, err := c.getRevertReasonFromReceipt(ctx, receipt); err != nil {
+			logger = &log.RelayLogger{Logger: logger.With(
+				logAttrRawErrorData, hex.EncodeToString(returnData),
+			)}
+			logger.Error("failed to get revert reason from receipt", err)
+		} else {
+			logger = &log.RelayLogger{Logger: logger.With(
+				logAttrRevertReason, revertReason,
+				logAttrRawErrorData, hex.EncodeToString(returnData),
+			)}
+		}
 		return fmt.Errorf("tx execution reverted")
 	}