diff --git a/math/uint_test.go b/math/uint_test.go
index fbe59f44fb..d7f8fe8fd7 100644
--- a/math/uint_test.go
+++ b/math/uint_test.go
@@ -370,5 +370,4 @@ func (s *uintTestSuite) TestUintBigEndian() {
 	u2 = u2.SetBytes(u1b)
 
 	s.Require().Equal(u1, u2)
-
 }
diff --git a/proto/cosmos/auth/v1beta1/query.proto b/proto/cosmos/auth/v1beta1/query.proto
index 0b66da6050..b5c65e28c8 100644
--- a/proto/cosmos/auth/v1beta1/query.proto
+++ b/proto/cosmos/auth/v1beta1/query.proto
@@ -48,12 +48,12 @@ service Query {
     option (google.api.http).get = "/cosmos/auth/v1beta1/module_accounts/{name}";
   }
 
-//  // Bech32Prefix queries bech32Prefix
-//  //
-//  // Since: cosmos-sdk 0.46
-//  rpc Bech32Prefix(Bech32PrefixRequest) returns (Bech32PrefixResponse) {
-//    option (google.api.http).get = "/cosmos/auth/v1beta1/bech32";
-//  }
+  //  // Bech32Prefix queries bech32Prefix
+  //  //
+  //  // Since: cosmos-sdk 0.46
+  //  rpc Bech32Prefix(Bech32PrefixRequest) returns (Bech32PrefixResponse) {
+  //    option (google.api.http).get = "/cosmos/auth/v1beta1/bech32";
+  //  }
 
   // AddressBytesToString converts Account Address bytes to string
   //
@@ -138,12 +138,12 @@ message QueryModuleAccountByNameResponse {
 //// Bech32PrefixRequest is the request type for Bech32Prefix rpc method.
 ////
 //// Since: cosmos-sdk 0.46
-//message Bech32PrefixRequest {}
+// message Bech32PrefixRequest {}
 
 //// Bech32PrefixResponse is the response type for Bech32Prefix rpc method.
 ////
 //// Since: cosmos-sdk 0.46
-//message Bech32PrefixResponse {
+// message Bech32PrefixResponse {
 //  string bech32_prefix = 1;
 //}
 
diff --git a/proto/cosmos/crosschain/v1/event.proto b/proto/cosmos/crosschain/v1/event.proto
index 285e0a26ba..99622e5d79 100644
--- a/proto/cosmos/crosschain/v1/event.proto
+++ b/proto/cosmos/crosschain/v1/event.proto
@@ -24,4 +24,6 @@ message EventCrossChain {
   string relayer_fee = 8;
   // Relayer fee for the ACK or FAIL_ACK package of this cross chain package
   string ack_relayer_fee = 9;
+  // Callback gas price the ACK or FAIL_ACK package
+  string callback_gas_price = 10;
 }
diff --git a/proto/cosmos/crosschain/v1/query.proto b/proto/cosmos/crosschain/v1/query.proto
index b5a5086448..9d721b6436 100644
--- a/proto/cosmos/crosschain/v1/query.proto
+++ b/proto/cosmos/crosschain/v1/query.proto
@@ -42,7 +42,7 @@ message QueryParamsResponse {
 // QueryCrossChainPackageRequest is the request type for the Query/CrossChainPackage RPC method.
 message QueryCrossChainPackageRequest {
   uint32 channel_id = 1;
-  uint64 sequence = 2;
+  uint64 sequence   = 2;
 }
 
 // QueryCrossChainPackageResponse is the response type for the Query/CrossChainPackage RPC method.
diff --git a/proto/cosmos/crypto/eth/bls/keys.proto b/proto/cosmos/crypto/eth/bls/keys.proto
index f5289d8347..4e4a3d4c9e 100644
--- a/proto/cosmos/crypto/eth/bls/keys.proto
+++ b/proto/cosmos/crypto/eth/bls/keys.proto
@@ -6,7 +6,7 @@ import "gogoproto/gogo.proto";
 option go_package = "github.com/cosmos/cosmos-sdk/crypto/keys/eth/bls";
 
 // PubKey defines a bls public key
-// Key is the compressed form of the pubkey. 
+// Key is the compressed form of the pubkey.
 message PubKey {
   option (gogoproto.goproto_stringer) = false;
 
diff --git a/proto/cosmos/gashub/v1alpha1/gashub.proto b/proto/cosmos/gashub/v1alpha1/gashub.proto
index 4d911da161..2408bb7e71 100644
--- a/proto/cosmos/gashub/v1alpha1/gashub.proto
+++ b/proto/cosmos/gashub/v1alpha1/gashub.proto
@@ -18,9 +18,9 @@ message Params {
 
 // MsgGasParams defines gas for a msg type
 message MsgGasParams {
-  option (gogoproto.equal)            = true;
+  option (gogoproto.equal) = true;
 
-  string              msg_type_url = 1 [(gogoproto.customname) = "MsgTypeUrl"];
+  string msg_type_url = 1 [(gogoproto.customname) = "MsgTypeUrl"];
   // gas_params is the oneof that represents either fixed_gas_params or dynamic_gas_params
   oneof gas_params {
     // fixed_type specifies fixed type gas params.
@@ -34,14 +34,14 @@ message MsgGasParams {
   }
   // FixedGasParams defines the parameters for fixed gas type.
   message FixedGasParams {
-    option (gogoproto.equal)            = true;
+    option (gogoproto.equal) = true;
 
     uint64 fixed_gas = 1 [(gogoproto.customname) = "FixedGas"];
   }
 
   // DynamicGasParams defines the parameters for dynamic gas type.
   message DynamicGasParams {
-    option (gogoproto.equal)            = true;
+    option (gogoproto.equal) = true;
 
     uint64 fixed_gas    = 1 [(gogoproto.customname) = "FixedGas"];
     uint64 gas_per_item = 2 [(gogoproto.customname) = "GasPerItem"];
diff --git a/proto/cosmos/gashub/v1alpha1/tx.proto b/proto/cosmos/gashub/v1alpha1/tx.proto
index cceb2b773a..a0eeb94891 100644
--- a/proto/cosmos/gashub/v1alpha1/tx.proto
+++ b/proto/cosmos/gashub/v1alpha1/tx.proto
@@ -22,7 +22,7 @@ message MsgUpdateMsgGasParams {
   option (gogoproto.equal)           = false;
   option (gogoproto.goproto_getters) = false;
 
-  string from = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  string                from           = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
   repeated MsgGasParams new_params_set = 2;
 }
 
diff --git a/proto/cosmos/oracle/v1/event.proto b/proto/cosmos/oracle/v1/event.proto
index fed8591578..a3e8bf404e 100644
--- a/proto/cosmos/oracle/v1/event.proto
+++ b/proto/cosmos/oracle/v1/event.proto
@@ -2,7 +2,6 @@
 syntax = "proto3";
 package cosmos.oracle.v1;
 
-
 option go_package = "github.com/cosmos/cosmos-sdk/x/oracle/types";
 
 // EventPackageClaim is emitted when a cross chain package is processed
@@ -27,4 +26,6 @@ message EventPackageClaim {
   string relayer_fee = 9;
   // Relayer fee paid for the ACK or FAIL_ACK package
   string ack_relayer_fee = 10;
+  // Callback gas price the ACK or FAIL_ACK package
+  string callback_gas_price = 11;
 }
\ No newline at end of file
diff --git a/proto/cosmos/oracle/v1/tx.proto b/proto/cosmos/oracle/v1/tx.proto
index e0b2920a76..93c4b414a4 100644
--- a/proto/cosmos/oracle/v1/tx.proto
+++ b/proto/cosmos/oracle/v1/tx.proto
@@ -21,14 +21,14 @@ message MsgClaim {
   option (gogoproto.equal)           = false;
   option (gogoproto.goproto_getters) = false;
 
-  string from_address = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
-  uint32 src_chain_id = 2;
-  uint32 dest_chain_id = 3;
-  uint64 sequence = 4;
-  uint64 timestamp = 5;
-  bytes payload = 6;
-  repeated fixed64 vote_address_set  = 7;
-  bytes agg_signature  = 8;
+  string           from_address     = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  uint32           src_chain_id     = 2;
+  uint32           dest_chain_id    = 3;
+  uint64           sequence         = 4;
+  uint64           timestamp        = 5;
+  bytes            payload          = 6;
+  repeated fixed64 vote_address_set = 7;
+  bytes            agg_signature    = 8;
 }
 
 // MsgClaimResponse defines the Msg/Claim response type
diff --git a/proto/cosmos/params/v1beta1/params.proto b/proto/cosmos/params/v1beta1/params.proto
index 0a081a4631..83936c7d32 100644
--- a/proto/cosmos/params/v1beta1/params.proto
+++ b/proto/cosmos/params/v1beta1/params.proto
@@ -16,8 +16,8 @@ message ParameterChangeProposal {
   string               title       = 1;
   string               description = 2;
   repeated ParamChange changes     = 3 [(gogoproto.nullable) = false];
-  bool                 cross_chain  = 4;   // flag for cross chain proposal
-  repeated string      addresses    = 5;   // used with cross_chain field to specify destination smart contract address(es)
+  bool                 cross_chain = 4; // flag for cross chain proposal
+  repeated string      addresses   = 5; // used with cross_chain field to specify destination smart contract address(es)
 }
 
 // ParamChange defines an individual parameter change, for use in
diff --git a/proto/cosmos/slashing/v1beta1/tx.proto b/proto/cosmos/slashing/v1beta1/tx.proto
index ab80d73086..0e5d6e12f5 100644
--- a/proto/cosmos/slashing/v1beta1/tx.proto
+++ b/proto/cosmos/slashing/v1beta1/tx.proto
@@ -40,8 +40,8 @@ message MsgImpeach {
   option (gogoproto.equal)           = false;
   option (gogoproto.goproto_getters) = false;
 
-  string      from              = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
-  string      validator_address = 2 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  string from              = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  string validator_address = 2 [(cosmos_proto.scalar) = "cosmos.AddressString"];
 }
 
 // MsgImpeachResponse defines the Msg/Impeach response type.
diff --git a/proto/cosmos/staking/v1beta1/tx.proto b/proto/cosmos/staking/v1beta1/tx.proto
index e6b0ef5952..8bbb201758 100644
--- a/proto/cosmos/staking/v1beta1/tx.proto
+++ b/proto/cosmos/staking/v1beta1/tx.proto
@@ -62,7 +62,7 @@ message MsgCreateValidator {
 
   string from            = 8 [(cosmos_proto.scalar) = "cosmos.AddressString"];
   string relayer_address = 9 [(cosmos_proto.scalar) = "cosmos.AddressString"];
-  string relayer_bls_key  = 10;
+  string relayer_bls_key = 10;
 }
 
 // MsgCreateValidatorResponse defines the Msg/CreateValidator response type.
@@ -87,8 +87,8 @@ message MsgEditValidator {
   string min_self_delegation = 4
       [(cosmos_proto.scalar) = "cosmos.Int", (gogoproto.customtype) = "github.com/cosmos/cosmos-sdk/types.Int"];
 
-  string relayer_address         = 5 [(cosmos_proto.scalar) = "cosmos.AddressString"];
-  string relayer_bls_key          = 6; // The BLS pubkey for the authorized relayer
+  string relayer_address = 5 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+  string relayer_bls_key = 6; // The BLS pubkey for the authorized relayer
 }
 
 // MsgEditValidatorResponse defines the Msg/EditValidator response type.
diff --git a/proto/cosmos/tx/v1beta1/tx.proto b/proto/cosmos/tx/v1beta1/tx.proto
index a57ca31d86..ba963bcf22 100644
--- a/proto/cosmos/tx/v1beta1/tx.proto
+++ b/proto/cosmos/tx/v1beta1/tx.proto
@@ -102,30 +102,30 @@ message SignDocEip712 {
   // chain_id is the identifier of the chain this transaction targets.
   // It prevents signed transactions from being used on another chain by an
   // attacker.
-  uint64 chain_id = 1[(gogoproto.jsontag) = "chain_id"];
+  uint64 chain_id = 1 [(gogoproto.jsontag) = "chain_id"];
 
   // account_number is the account number of the account in state.
-  uint64 account_number = 2[(gogoproto.jsontag) = "account_number"];
+  uint64 account_number = 2 [(gogoproto.jsontag) = "account_number"];
 
   // sequence is the sequence number of the signing account.
-  uint64 sequence = 3[(gogoproto.jsontag) = "sequence"];
+  uint64 sequence = 3 [(gogoproto.jsontag) = "sequence"];
 
   // Fee is the fee and gas limit for the transaction. The first signer is the
   // primary signer and the one which pays the fee. The fee can be calculated
   // based on the cost of evaluating the body and doing signature verification
   // of the signers. This can be estimated via simulation.
-  Fee fee = 4[(gogoproto.nullable) = false];
+  Fee fee = 4 [(gogoproto.nullable) = false];
 
   // msg is the msg in the EIP712 transaction.
   google.protobuf.Any msg = 5;
 
   // timeout_height is the transaction's timeout height (if set).
-  uint64 timeout_height = 6[(gogoproto.jsontag) = "timeout_height"];
+  uint64 timeout_height = 6 [(gogoproto.jsontag) = "timeout_height"];
 
   // memo is any arbitrary note/comment to be added to the transaction.
   // WARNING: in clients, any publicly exposed text should not be called memo,
   // but should be called `note` instead (see https://github.com/cosmos/cosmos-sdk/issues/9122).
-  string memo = 7[(gogoproto.jsontag) = "memo"];
+  string memo = 7 [(gogoproto.jsontag) = "memo"];
 
   // Tip is the optional tip used for transactions fees paid in another denom.
   // It should be left empty if the signer is not the tipper for this
diff --git a/types/cross_chain.go b/types/cross_chain.go
index 3a98517cda..e1bd0de686 100644
--- a/types/cross_chain.go
+++ b/types/cross_chain.go
@@ -59,11 +59,12 @@ func (c ExecuteResult) ErrMsg() string {
 }
 
 const (
-	CrossChainFeeLength = 32
-	PackageTypeLength   = 1
-	TimestampLength     = 8
+	CrossChainFeeLength    = 32
+	CallbackGasPriceLength = 32
+	PackageTypeLength      = 1
+	TimestampLength        = 8
 
-	SynPackageHeaderLength = 2*CrossChainFeeLength + TimestampLength + PackageTypeLength
+	SynPackageHeaderLength = 2*CrossChainFeeLength + CallbackGasPriceLength + TimestampLength + PackageTypeLength
 	AckPackageHeaderLength = CrossChainFeeLength + TimestampLength + PackageTypeLength
 )
 
@@ -80,10 +81,14 @@ type PackageHeader struct {
 	RelayerFee  *big.Int // relayer fee is the relayer fee paid to relayer src source chain to dest chain
 	// ack relayer fee is the relayer fee paid to relayer for the ack or fail ack package if there is any
 	// Ack and FailAck packages don't have ack relayer fee, since there is no corresponding ack or fail ack packages
-	AckRelayerFee *big.Int
+	AckRelayerFee    *big.Int
+	CallbackGasPrice *big.Int
 }
 
-var NilAckRelayerFee = big.NewInt(0) // For ack packages, the ack relayer fee should be nil, and it would not be encoded into package header
+var (
+	NilAckRelayerFee    = big.NewInt(0) // For ack packages, the ack relayer fee should be nil, and it would not be encoded into package header
+	NilCallbackGasPrice = big.NewInt(0) // For ack packages, the callback gas price should be nil, and it would not be encoded into package header
+)
 
 func EncodePackageHeader(header PackageHeader) []byte {
 	packageHeader := make([]byte, GetPackageHeaderLength(header.PackageType))
@@ -99,7 +104,10 @@ func EncodePackageHeader(header PackageHeader) []byte {
 	// add ack relayer fee to header for syn package
 	if header.PackageType == SynCrossChainPackageType {
 		ackRelayerFeeLength := len(header.AckRelayerFee.Bytes())
-		copy(packageHeader[SynPackageHeaderLength-ackRelayerFeeLength:SynPackageHeaderLength], header.AckRelayerFee.Bytes())
+		copy(packageHeader[AckPackageHeaderLength:AckPackageHeaderLength+ackRelayerFeeLength], header.AckRelayerFee.Bytes())
+
+		callbackGasPriceLength := len(header.CallbackGasPrice.Bytes())
+		copy(packageHeader[SynPackageHeaderLength-callbackGasPriceLength:SynPackageHeaderLength], header.CallbackGasPrice.Bytes())
 	}
 
 	return packageHeader
@@ -126,14 +134,16 @@ func DecodePackageHeader(packageHeader []byte) (PackageHeader, error) {
 	relayerFee := big.NewInt(0).SetBytes(packageHeader[PackageTypeLength+TimestampLength : AckPackageHeaderLength])
 
 	header := PackageHeader{
-		PackageType:   packageType,
-		Timestamp:     timestamp,
-		RelayerFee:    relayerFee,
-		AckRelayerFee: big.NewInt(0),
+		PackageType:      packageType,
+		Timestamp:        timestamp,
+		RelayerFee:       relayerFee,
+		AckRelayerFee:    big.NewInt(0),
+		CallbackGasPrice: big.NewInt(0),
 	}
 
 	if packageType == SynCrossChainPackageType {
-		header.AckRelayerFee = big.NewInt(0).SetBytes(packageHeader[AckPackageHeaderLength:SynPackageHeaderLength])
+		header.AckRelayerFee = big.NewInt(0).SetBytes(packageHeader[AckPackageHeaderLength : AckPackageHeaderLength+CrossChainFeeLength])
+		header.CallbackGasPrice = big.NewInt(0).SetBytes(packageHeader[SynPackageHeaderLength-CallbackGasPriceLength : SynPackageHeaderLength])
 	}
 
 	return header, nil
diff --git a/x/auth/tx/eip712_test.go b/x/auth/tx/eip712_test.go
index 94538f70c0..3f83711b20 100644
--- a/x/auth/tx/eip712_test.go
+++ b/x/auth/tx/eip712_test.go
@@ -3,6 +3,7 @@ package tx
 import (
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/require"
 
@@ -19,7 +20,6 @@ import (
 	"github.com/cosmos/cosmos-sdk/x/feegrant"
 	govtypes "github.com/cosmos/cosmos-sdk/x/gov/types/v1"
 	"github.com/cosmos/cosmos-sdk/x/group"
-	"time"
 )
 
 func TestEIP712Handler(t *testing.T) {
diff --git a/x/crosschain/keeper/keeper.go b/x/crosschain/keeper/keeper.go
index aa60e74305..83aff6d411 100644
--- a/x/crosschain/keeper/keeper.go
+++ b/x/crosschain/keeper/keeper.go
@@ -81,7 +81,7 @@ func (k Keeper) SetParams(ctx sdk.Context, params types.Params) {
 
 // CreateRawIBCPackageWithFee creates a cross chain package with given cross chain fee
 func (k Keeper) CreateRawIBCPackageWithFee(ctx sdk.Context, channelID sdk.ChannelID,
-	packageType sdk.CrossChainPackageType, packageLoad []byte, relayerFee *big.Int, ackRelayerFee *big.Int,
+	packageType sdk.CrossChainPackageType, packageLoad []byte, relayerFee *big.Int, ackRelayerFee *big.Int, callbackGasPrice *big.Int,
 ) (uint64, error) {
 	if packageType == sdk.SynCrossChainPackageType && k.GetChannelSendPermission(ctx, k.GetDestChainID(), channelID) != sdk.ChannelAllow {
 		return 0, fmt.Errorf("channel %d is not allowed to write syn package", channelID)
@@ -96,10 +96,11 @@ func (k Keeper) CreateRawIBCPackageWithFee(ctx sdk.Context, channelID sdk.Channe
 
 	// Assemble the package header
 	packageHeader := sdk.EncodePackageHeader(sdk.PackageHeader{
-		PackageType:   packageType,
-		Timestamp:     uint64(ctx.BlockTime().Unix()),
-		RelayerFee:    relayerFee,
-		AckRelayerFee: ackRelayerFee,
+		PackageType:      packageType,
+		Timestamp:        uint64(ctx.BlockTime().Unix()),
+		RelayerFee:       relayerFee,
+		AckRelayerFee:    ackRelayerFee,
+		CallbackGasPrice: callbackGasPrice,
 	})
 
 	kvStore.Set(key, append(packageHeader, packageLoad...))
@@ -107,15 +108,16 @@ func (k Keeper) CreateRawIBCPackageWithFee(ctx sdk.Context, channelID sdk.Channe
 	k.IncrSendSequence(ctx, channelID)
 
 	err := ctx.EventManager().EmitTypedEvent(&types.EventCrossChain{
-		SrcChainId:    uint32(k.GetSrcChainID()),
-		DestChainId:   uint32(k.GetDestChainID()),
-		ChannelId:     uint32(channelID),
-		Sequence:      sequence,
-		PackageType:   uint32(packageType),
-		Timestamp:     uint64(ctx.BlockTime().Unix()),
-		PackageLoad:   hex.EncodeToString(packageLoad),
-		RelayerFee:    relayerFee.String(),
-		AckRelayerFee: ackRelayerFee.String(),
+		SrcChainId:       uint32(k.GetSrcChainID()),
+		DestChainId:      uint32(k.GetDestChainID()),
+		ChannelId:        uint32(channelID),
+		Sequence:         sequence,
+		PackageType:      uint32(packageType),
+		Timestamp:        uint64(ctx.BlockTime().Unix()),
+		PackageLoad:      hex.EncodeToString(packageLoad),
+		RelayerFee:       relayerFee.String(),
+		AckRelayerFee:    ackRelayerFee.String(),
+		CallbackGasPrice: callbackGasPrice.String(),
 	})
 	if err != nil {
 		return 0, err
diff --git a/x/crosschain/types/event.pb.go b/x/crosschain/types/event.pb.go
index 907fc5a963..24735af507 100644
--- a/x/crosschain/types/event.pb.go
+++ b/x/crosschain/types/event.pb.go
@@ -42,6 +42,8 @@ type EventCrossChain struct {
 	RelayerFee string `protobuf:"bytes,8,opt,name=relayer_fee,json=relayerFee,proto3" json:"relayer_fee,omitempty"`
 	// Relayer fee for the ACK or FAIL_ACK package of this cross chain package
 	AckRelayerFee string `protobuf:"bytes,9,opt,name=ack_relayer_fee,json=ackRelayerFee,proto3" json:"ack_relayer_fee,omitempty"`
+	// Callback gas price the ACK or FAIL_ACK package
+	CallbackGasPrice string `protobuf:"bytes,10,opt,name=callback_gas_price,json=callbackGasPrice,proto3" json:"callback_gas_price,omitempty"`
 }
 
 func (m *EventCrossChain) Reset()         { *m = EventCrossChain{} }
@@ -140,6 +142,13 @@ func (m *EventCrossChain) GetAckRelayerFee() string {
 	return ""
 }
 
+func (m *EventCrossChain) GetCallbackGasPrice() string {
+	if m != nil {
+		return m.CallbackGasPrice
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterType((*EventCrossChain)(nil), "cosmos.crosschain.v1.EventCrossChain")
 }
@@ -147,28 +156,29 @@ func init() {
 func init() { proto.RegisterFile("cosmos/crosschain/v1/event.proto", fileDescriptor_2a5a3ba75f5dd2c3) }
 
 var fileDescriptor_2a5a3ba75f5dd2c3 = []byte{
-	// 323 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0xd1, 0x4f, 0x4f, 0xfa, 0x30,
-	0x18, 0xc0, 0x71, 0xca, 0x8f, 0x1f, 0xb2, 0x07, 0x08, 0x49, 0xe3, 0x61, 0x31, 0x3a, 0x27, 0x07,
-	0xc3, 0xc5, 0x2d, 0xc4, 0x77, 0x20, 0xd1, 0x84, 0xc4, 0x13, 0xf1, 0xe4, 0x65, 0x29, 0xed, 0x23,
-	0x2c, 0x63, 0xeb, 0x6c, 0x0b, 0x91, 0x77, 0xe1, 0x3b, 0xf2, 0xea, 0x91, 0xa3, 0x47, 0x03, 0x6f,
-	0xc4, 0xb4, 0xfc, 0x3d, 0x2d, 0xfb, 0xf6, 0xd3, 0x27, 0x69, 0x1e, 0x08, 0xb9, 0xd4, 0xb9, 0xd4,
-	0x31, 0x57, 0x52, 0x6b, 0x3e, 0x65, 0x69, 0x11, 0x2f, 0xfa, 0x31, 0x2e, 0xb0, 0x30, 0x51, 0xa9,
-	0xa4, 0x91, 0xf4, 0x7c, 0x2b, 0xa2, 0xa3, 0x88, 0x16, 0xfd, 0xee, 0x57, 0x15, 0x3a, 0x8f, 0x56,
-	0x0d, 0x6c, 0x1e, 0xd8, 0x4c, 0x43, 0x68, 0x69, 0xc5, 0x13, 0x67, 0x92, 0x54, 0xf8, 0x24, 0x24,
-	0xbd, 0xf6, 0x08, 0xb4, 0xe2, 0xee, 0x7c, 0x28, 0x68, 0x17, 0xda, 0x02, 0xb5, 0x39, 0x92, 0xaa,
-	0x23, 0x4d, 0x1b, 0xf7, 0xe6, 0x0a, 0x80, 0x4f, 0x59, 0x51, 0xe0, 0xcc, 0x82, 0x7f, 0x0e, 0x78,
-	0xbb, 0x32, 0x14, 0xf4, 0x02, 0x1a, 0x1a, 0xdf, 0xe7, 0x58, 0x70, 0xf4, 0x6b, 0x21, 0xe9, 0xd5,
-	0x46, 0x87, 0x7f, 0x7a, 0x03, 0xad, 0x92, 0xf1, 0x8c, 0x4d, 0x30, 0x31, 0xcb, 0x12, 0xfd, 0xff,
-	0xdb, 0xe9, 0xbb, 0xf6, 0xb2, 0x2c, 0x91, 0x5e, 0x82, 0x67, 0xd2, 0x1c, 0xb5, 0x61, 0x79, 0xe9,
-	0xd7, 0xdd, 0xfd, 0x63, 0x38, 0x1d, 0x30, 0x93, 0x4c, 0xf8, 0x67, 0x21, 0xe9, 0x79, 0x87, 0x01,
-	0xcf, 0x92, 0x09, 0x7a, 0x0d, 0x4d, 0x85, 0x33, 0xb6, 0x44, 0x95, 0xbc, 0x21, 0xfa, 0x0d, 0x27,
-	0x60, 0x97, 0x9e, 0x10, 0xe9, 0x2d, 0x74, 0x18, 0xcf, 0x92, 0x53, 0xe4, 0x39, 0xd4, 0x66, 0x3c,
-	0x1b, 0x1d, 0xdc, 0xc3, 0xf0, 0x7b, 0x1d, 0x90, 0xd5, 0x3a, 0x20, 0xbf, 0xeb, 0x80, 0x7c, 0x6e,
-	0x82, 0xca, 0x6a, 0x13, 0x54, 0x7e, 0x36, 0x41, 0xe5, 0x35, 0x9e, 0xa4, 0x66, 0x3a, 0x1f, 0x47,
-	0x5c, 0xe6, 0xf1, 0x7e, 0x3d, 0xee, 0x73, 0xa7, 0x45, 0x16, 0x7f, 0x9c, 0xee, 0xca, 0x3e, 0x53,
-	0x8f, 0xeb, 0x6e, 0x53, 0xf7, 0x7f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x93, 0x08, 0x3b, 0x98, 0xcd,
-	0x01, 0x00, 0x00,
+	// 348 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0xd1, 0xcb, 0x4e, 0xf2, 0x40,
+	0x14, 0xc0, 0x71, 0xca, 0xc7, 0x87, 0xf4, 0x00, 0xc1, 0x4c, 0x5c, 0x34, 0x46, 0x6b, 0x65, 0x61,
+	0x58, 0x68, 0x1b, 0xe2, 0x1b, 0x48, 0xd4, 0x90, 0xb8, 0x30, 0xc4, 0x95, 0x9b, 0x66, 0x98, 0x1e,
+	0xa1, 0xe9, 0x65, 0xea, 0xcc, 0x40, 0xe4, 0x2d, 0x7c, 0x2c, 0x97, 0x2c, 0x5d, 0x1a, 0x58, 0xfb,
+	0x0e, 0x66, 0x86, 0x4b, 0x59, 0x35, 0xfd, 0x9f, 0x5f, 0xcf, 0xa2, 0x07, 0x3c, 0xc6, 0x65, 0xc6,
+	0x65, 0xc0, 0x04, 0x97, 0x92, 0x4d, 0x69, 0x9c, 0x07, 0xf3, 0x7e, 0x80, 0x73, 0xcc, 0x95, 0x5f,
+	0x08, 0xae, 0x38, 0x39, 0xd9, 0x08, 0xbf, 0x14, 0xfe, 0xbc, 0xdf, 0xfd, 0xad, 0x42, 0xe7, 0x5e,
+	0xab, 0x81, 0xce, 0x03, 0x9d, 0x89, 0x07, 0x2d, 0x29, 0x58, 0x68, 0x4c, 0x18, 0x47, 0x8e, 0xe5,
+	0x59, 0xbd, 0xf6, 0x08, 0xa4, 0x60, 0x66, 0x3e, 0x8c, 0x48, 0x17, 0xda, 0x11, 0x4a, 0x55, 0x92,
+	0xaa, 0x21, 0x4d, 0x1d, 0x77, 0xe6, 0x1c, 0x80, 0x4d, 0x69, 0x9e, 0x63, 0xaa, 0xc1, 0x3f, 0x03,
+	0xec, 0x6d, 0x19, 0x46, 0xe4, 0x14, 0x1a, 0x12, 0xdf, 0x67, 0x98, 0x33, 0x74, 0x6a, 0x9e, 0xd5,
+	0xab, 0x8d, 0xf6, 0xef, 0xe4, 0x12, 0x5a, 0x05, 0x65, 0x09, 0x9d, 0x60, 0xa8, 0x16, 0x05, 0x3a,
+	0xff, 0x37, 0xdb, 0xb7, 0xed, 0x65, 0x51, 0x20, 0x39, 0x03, 0x5b, 0xc5, 0x19, 0x4a, 0x45, 0xb3,
+	0xc2, 0xa9, 0x9b, 0xef, 0xcb, 0x70, 0xb8, 0x20, 0xe5, 0x34, 0x72, 0x8e, 0x3c, 0xab, 0x67, 0xef,
+	0x17, 0x3c, 0x71, 0x1a, 0x91, 0x0b, 0x68, 0x0a, 0x4c, 0xe9, 0x02, 0x45, 0xf8, 0x86, 0xe8, 0x34,
+	0x8c, 0x80, 0x6d, 0x7a, 0x40, 0x24, 0x57, 0xd0, 0xa1, 0x2c, 0x09, 0x0f, 0x91, 0x6d, 0x50, 0x9b,
+	0xb2, 0x64, 0x54, 0xba, 0x6b, 0x20, 0x8c, 0xa6, 0xe9, 0x58, 0xe3, 0x09, 0x95, 0x61, 0x21, 0x62,
+	0x86, 0x0e, 0x18, 0x7a, 0xbc, 0x9b, 0x3c, 0x52, 0xf9, 0xac, 0xfb, 0xdd, 0xf0, 0x6b, 0xe5, 0x5a,
+	0xcb, 0x95, 0x6b, 0xfd, 0xac, 0x5c, 0xeb, 0x73, 0xed, 0x56, 0x96, 0x6b, 0xb7, 0xf2, 0xbd, 0x76,
+	0x2b, 0xaf, 0xc1, 0x24, 0x56, 0xd3, 0xd9, 0xd8, 0x67, 0x3c, 0x0b, 0x76, 0xc7, 0x34, 0x8f, 0x1b,
+	0x19, 0x25, 0xc1, 0xc7, 0xe1, 0x65, 0xf5, 0x4f, 0x91, 0xe3, 0xba, 0xb9, 0xeb, 0xed, 0x5f, 0x00,
+	0x00, 0x00, 0xff, 0xff, 0x85, 0x33, 0xda, 0x16, 0xfb, 0x01, 0x00, 0x00,
 }
 
 func (m *EventCrossChain) Marshal() (dAtA []byte, err error) {
@@ -191,6 +201,13 @@ func (m *EventCrossChain) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if len(m.CallbackGasPrice) > 0 {
+		i -= len(m.CallbackGasPrice)
+		copy(dAtA[i:], m.CallbackGasPrice)
+		i = encodeVarintEvent(dAtA, i, uint64(len(m.CallbackGasPrice)))
+		i--
+		dAtA[i] = 0x52
+	}
 	if len(m.AckRelayerFee) > 0 {
 		i -= len(m.AckRelayerFee)
 		copy(dAtA[i:], m.AckRelayerFee)
@@ -292,6 +309,10 @@ func (m *EventCrossChain) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovEvent(uint64(l))
 	}
+	l = len(m.CallbackGasPrice)
+	if l > 0 {
+		n += 1 + l + sovEvent(uint64(l))
+	}
 	return n
 }
 
@@ -540,6 +561,38 @@ func (m *EventCrossChain) Unmarshal(dAtA []byte) error {
 			}
 			m.AckRelayerFee = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 10:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CallbackGasPrice", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowEvent
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthEvent
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthEvent
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.CallbackGasPrice = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipEvent(dAtA[iNdEx:])
diff --git a/x/oracle/keeper/msg_server.go b/x/oracle/keeper/msg_server.go
index daa54719a2..2004430a5e 100644
--- a/x/oracle/keeper/msg_server.go
+++ b/x/oracle/keeper/msg_server.go
@@ -203,7 +203,8 @@ func handlePackage(
 			var sendSeq uint64
 			if len(pack.Payload) >= sdk.SynPackageHeaderLength {
 				sendSeq, ibcErr = oracleKeeper.CrossChainKeeper.CreateRawIBCPackageWithFee(ctx, pack.ChannelId,
-					sdk.FailAckCrossChainPackageType, pack.Payload[sdk.SynPackageHeaderLength:], packageHeader.AckRelayerFee, sdk.NilAckRelayerFee)
+					sdk.FailAckCrossChainPackageType, pack.Payload[sdk.SynPackageHeaderLength:], packageHeader.AckRelayerFee, sdk.NilAckRelayerFee,
+					packageHeader.CallbackGasPrice)
 			} else {
 				logger.Error("found payload without header",
 					"channelID", pack.ChannelId, "sequence", pack.Sequence, "payload", hex.EncodeToString(pack.Payload))
@@ -217,7 +218,7 @@ func handlePackage(
 			sendSequence = int64(sendSeq)
 		} else if len(result.Payload) != 0 {
 			sendSeq, err := oracleKeeper.CrossChainKeeper.CreateRawIBCPackageWithFee(ctx, pack.ChannelId,
-				sdk.AckCrossChainPackageType, result.Payload, packageHeader.AckRelayerFee, sdk.NilAckRelayerFee)
+				sdk.AckCrossChainPackageType, result.Payload, packageHeader.AckRelayerFee, sdk.NilAckRelayerFee, packageHeader.CallbackGasPrice)
 			if err != nil {
 				logger.Error("failed to write AckCrossChainPackage", "err", err)
 				return nil, nil, err
diff --git a/x/oracle/keeper/msg_server_test.go b/x/oracle/keeper/msg_server_test.go
index 94be454885..1587355064 100644
--- a/x/oracle/keeper/msg_server_test.go
+++ b/x/oracle/keeper/msg_server_test.go
@@ -51,10 +51,11 @@ func (s *TestSuite) TestClaim() {
 	}
 
 	payloadHeader := sdk.EncodePackageHeader(sdk.PackageHeader{
-		PackageType:   sdk.SynCrossChainPackageType,
-		Timestamp:     1992,
-		RelayerFee:    big.NewInt(1),
-		AckRelayerFee: big.NewInt(1),
+		PackageType:      sdk.SynCrossChainPackageType,
+		Timestamp:        1992,
+		RelayerFee:       big.NewInt(1),
+		AckRelayerFee:    big.NewInt(1),
+		CallbackGasPrice: big.NewInt(1),
 	})
 
 	testPackage := types.Package{
@@ -154,10 +155,11 @@ func (s *TestSuite) TestInvalidClaim() {
 
 	// invalid timestamp
 	payloadHeader := sdk.EncodePackageHeader(sdk.PackageHeader{
-		PackageType:   sdk.SynCrossChainPackageType,
-		Timestamp:     1993,
-		RelayerFee:    big.NewInt(1),
-		AckRelayerFee: big.NewInt(1),
+		PackageType:      sdk.SynCrossChainPackageType,
+		Timestamp:        1993,
+		RelayerFee:       big.NewInt(1),
+		AckRelayerFee:    big.NewInt(1),
+		CallbackGasPrice: big.NewInt(1),
 	})
 	testPackage := types.Package{
 		ChannelId: 1,
diff --git a/x/oracle/types/event.pb.go b/x/oracle/types/event.pb.go
index 64e1c071be..f75cad3da5 100644
--- a/x/oracle/types/event.pb.go
+++ b/x/oracle/types/event.pb.go
@@ -44,6 +44,8 @@ type EventPackageClaim struct {
 	RelayerFee string `protobuf:"bytes,9,opt,name=relayer_fee,json=relayerFee,proto3" json:"relayer_fee,omitempty"`
 	// Relayer fee paid for the ACK or FAIL_ACK package
 	AckRelayerFee string `protobuf:"bytes,10,opt,name=ack_relayer_fee,json=ackRelayerFee,proto3" json:"ack_relayer_fee,omitempty"`
+	// Callback gas price the ACK or FAIL_ACK package
+	CallbackGasPrice string `protobuf:"bytes,11,opt,name=callback_gas_price,json=callbackGasPrice,proto3" json:"callback_gas_price,omitempty"`
 }
 
 func (m *EventPackageClaim) Reset()         { *m = EventPackageClaim{} }
@@ -149,6 +151,13 @@ func (m *EventPackageClaim) GetAckRelayerFee() string {
 	return ""
 }
 
+func (m *EventPackageClaim) GetCallbackGasPrice() string {
+	if m != nil {
+		return m.CallbackGasPrice
+	}
+	return ""
+}
+
 func init() {
 	proto.RegisterType((*EventPackageClaim)(nil), "cosmos.oracle.v1.EventPackageClaim")
 }
@@ -156,30 +165,31 @@ func init() {
 func init() { proto.RegisterFile("cosmos/oracle/v1/event.proto", fileDescriptor_3e254cedc4112fb0) }
 
 var fileDescriptor_3e254cedc4112fb0 = []byte{
-	// 357 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0xd1, 0xcb, 0x6a, 0xdb, 0x40,
-	0x14, 0x80, 0x61, 0x8f, 0x6f, 0xb5, 0x8e, 0x2d, 0xec, 0x0e, 0x5d, 0x08, 0xda, 0xaa, 0xaa, 0x0b,
-	0x45, 0xa5, 0x54, 0xc2, 0xf4, 0x0d, 0x6a, 0x5c, 0xf0, 0xa2, 0x50, 0x94, 0xac, 0xb2, 0x11, 0xe3,
-	0xd1, 0x89, 0x24, 0x74, 0xcd, 0x8c, 0x2c, 0xe2, 0xb7, 0xc8, 0x63, 0x65, 0xe9, 0x65, 0x96, 0xc1,
-	0x5e, 0xe4, 0x35, 0x82, 0x2e, 0xb6, 0xb3, 0x12, 0xfa, 0xcf, 0xc7, 0x0c, 0xcc, 0x81, 0x4f, 0x3c,
-	0x93, 0x49, 0x26, 0xed, 0x4c, 0x30, 0x1e, 0xa3, 0x5d, 0x2e, 0x6c, 0x2c, 0x31, 0x2d, 0xac, 0x5c,
-	0x64, 0x45, 0x46, 0x67, 0xcd, 0xd4, 0x6a, 0xa6, 0x56, 0xb9, 0x98, 0xbf, 0x74, 0xe1, 0xfd, 0xaa,
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-	0xc0, 0xc2, 0xd4, 0x0d, 0x3d, 0x8d, 0x18, 0xc4, 0x54, 0x1d, 0x90, 0x82, 0x2f, 0xab, 0xb4, 0xf6,
-	0xe8, 0x1c, 0x54, 0x0f, 0x65, 0x71, 0x21, 0xdd, 0x9a, 0x8c, 0xab, 0x78, 0x32, 0x9f, 0x01, 0x78,
-	0xc0, 0xd2, 0x14, 0xe3, 0x0a, 0xf4, 0x6a, 0xa0, 0xb4, 0x65, 0xed, 0xd1, 0xaf, 0x30, 0xc9, 0x9b,
-	0x4b, 0xdd, 0x62, 0x97, 0xa3, 0xd6, 0x6f, 0x4e, 0x68, 0xdb, 0xf5, 0x2e, 0x47, 0xfa, 0x03, 0x66,
-	0x02, 0x39, 0x86, 0x25, 0xba, 0x12, 0xef, 0xb6, 0x98, 0x72, 0xd4, 0x06, 0x06, 0x31, 0xfb, 0xce,
-	0xb4, 0xed, 0x57, 0x6d, 0xa6, 0xdf, 0x40, 0x95, 0x98, 0x7a, 0x17, 0x37, 0x34, 0x88, 0xd9, 0x73,
-	0x26, 0x55, 0x3c, 0xa3, 0x0f, 0x30, 0xe0, 0x82, 0xc9, 0x40, 0x7b, 0x67, 0x10, 0x73, 0xe4, 0x34,
-	0x3f, 0xf4, 0x23, 0x28, 0x28, 0x44, 0x26, 0xdc, 0x44, 0xfa, 0xda, 0xc8, 0x20, 0xa6, 0xe2, 0x8c,
-	0xea, 0xf0, 0x4f, 0xfa, 0xf4, 0x0b, 0x8c, 0x05, 0xc6, 0x6c, 0x87, 0xc2, 0xbd, 0x45, 0xd4, 0x94,
-	0x7a, 0x0c, 0x6d, 0xfa, 0x8b, 0x48, 0xbf, 0xc3, 0x94, 0xf1, 0xc8, 0x7d, 0x8b, 0xa0, 0x46, 0x2a,
-	0xe3, 0x91, 0x73, 0x76, 0x7f, 0x56, 0x8f, 0x07, 0x9d, 0xec, 0x0f, 0x3a, 0x79, 0x3e, 0xe8, 0xe4,
-	0xe1, 0xa8, 0x77, 0xf6, 0x47, 0xbd, 0xf3, 0x74, 0xd4, 0x3b, 0x37, 0x3f, 0xfd, 0xb0, 0x08, 0xb6,
-	0x1b, 0x8b, 0x67, 0x89, 0xdd, 0xae, 0xaf, 0xf9, 0xfc, 0x92, 0x5e, 0x64, 0xdf, 0x9f, 0x76, 0x59,
-	0x3d, 0x92, 0xdc, 0x0c, 0xeb, 0x4d, 0xfe, 0x7e, 0x0d, 0x00, 0x00, 0xff, 0xff, 0x2d, 0x9f, 0x98,
-	0x8f, 0xe9, 0x01, 0x00, 0x00,
+	// 378 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x4c, 0xd1, 0x4f, 0xea, 0xd3, 0x40,
+	0x14, 0xc0, 0xf1, 0x8e, 0xfd, 0xb5, 0x36, 0xaf, 0x0d, 0xad, 0x83, 0x8b, 0x80, 0x1a, 0x63, 0x05,
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+	0xe9, 0xa2, 0x9b, 0x7a, 0xdd, 0xd4, 0x6b, 0x56, 0xcb, 0x9f, 0x43, 0x78, 0xb0, 0xd1, 0x62, 0xc7,
+	0x45, 0xca, 0x23, 0x5c, 0x67, 0x3c, 0xc9, 0xa9, 0x03, 0x33, 0x25, 0x05, 0x13, 0x31, 0x4f, 0x0a,
+	0x96, 0x84, 0x16, 0x71, 0x88, 0x6b, 0x06, 0xa0, 0xa4, 0x58, 0xeb, 0xb4, 0x0d, 0xe9, 0x12, 0xcc,
+	0x10, 0x55, 0x7d, 0x23, 0xf7, 0x5a, 0x32, 0xd5, 0xf1, 0x6a, 0x9e, 0x00, 0x88, 0x98, 0x17, 0x05,
+	0x66, 0x1a, 0x0c, 0x5b, 0x60, 0xf4, 0x65, 0x1b, 0xd2, 0x67, 0x30, 0xab, 0xba, 0x4b, 0x59, 0x7d,
+	0xac, 0xd0, 0xba, 0xeb, 0x4e, 0xe8, 0xdb, 0xe7, 0x63, 0x85, 0xf4, 0x25, 0x2c, 0x24, 0x0a, 0x4c,
+	0x1a, 0x64, 0x0a, 0xbf, 0x1d, 0xb0, 0x10, 0x68, 0x8d, 0x1c, 0xe2, 0xde, 0x05, 0xf3, 0xbe, 0x7f,
+	0xea, 0x33, 0x7d, 0x0e, 0xa6, 0xc2, 0x22, 0xbc, 0xb9, 0xb1, 0x43, 0xdc, 0x61, 0x30, 0xd3, 0xf1,
+	0x1f, 0x7a, 0x08, 0x23, 0x21, 0xb9, 0x8a, 0xad, 0xfb, 0x0e, 0x71, 0x27, 0x41, 0xf7, 0x43, 0x1f,
+	0x81, 0x81, 0x52, 0x96, 0x92, 0xe5, 0x2a, 0xb2, 0x26, 0x0e, 0x71, 0x8d, 0x60, 0xd2, 0x86, 0x8f,
+	0x2a, 0xa2, 0x4f, 0x61, 0x2a, 0x31, 0xe3, 0x47, 0x94, 0xec, 0x2b, 0xa2, 0x65, 0xb4, 0x63, 0xe8,
+	0xd3, 0x7b, 0x44, 0xfa, 0x02, 0xe6, 0x5c, 0xa4, 0xec, 0x7f, 0x04, 0x2d, 0x32, 0xb9, 0x48, 0x83,
+	0x9b, 0x7b, 0x0d, 0x54, 0xf0, 0x2c, 0xdb, 0x6b, 0x1c, 0x71, 0xc5, 0x2a, 0x99, 0x08, 0xb4, 0xa6,
+	0x2d, 0x5d, 0x5c, 0x27, 0x1f, 0xb8, 0xda, 0xe9, 0xfe, 0x6e, 0xf3, 0xeb, 0x6c, 0x93, 0xd3, 0xd9,
+	0x26, 0x7f, 0xce, 0x36, 0xf9, 0x71, 0xb1, 0x07, 0xa7, 0x8b, 0x3d, 0xf8, 0x7d, 0xb1, 0x07, 0x5f,
+	0x5e, 0x45, 0x49, 0x1d, 0x1f, 0xf6, 0x9e, 0x28, 0x73, 0xbf, 0x5f, 0x76, 0xf7, 0x79, 0xa3, 0xc2,
+	0xd4, 0xff, 0x7e, 0xdd, 0xbc, 0x7e, 0x52, 0xb5, 0x1f, 0xb7, 0x7b, 0x7f, 0xfb, 0x37, 0x00, 0x00,
+	0xff, 0xff, 0xd5, 0x7c, 0x15, 0x81, 0x17, 0x02, 0x00, 0x00,
 }
 
 func (m *EventPackageClaim) Marshal() (dAtA []byte, err error) {
@@ -202,6 +212,13 @@ func (m *EventPackageClaim) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 	_ = i
 	var l int
 	_ = l
+	if len(m.CallbackGasPrice) > 0 {
+		i -= len(m.CallbackGasPrice)
+		copy(dAtA[i:], m.CallbackGasPrice)
+		i = encodeVarintEvent(dAtA, i, uint64(len(m.CallbackGasPrice)))
+		i--
+		dAtA[i] = 0x5a
+	}
 	if len(m.AckRelayerFee) > 0 {
 		i -= len(m.AckRelayerFee)
 		copy(dAtA[i:], m.AckRelayerFee)
@@ -316,6 +333,10 @@ func (m *EventPackageClaim) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovEvent(uint64(l))
 	}
+	l = len(m.CallbackGasPrice)
+	if l > 0 {
+		n += 1 + l + sovEvent(uint64(l))
+	}
 	return n
 }
 
@@ -584,6 +605,38 @@ func (m *EventPackageClaim) Unmarshal(dAtA []byte) error {
 			}
 			m.AckRelayerFee = string(dAtA[iNdEx:postIndex])
 			iNdEx = postIndex
+		case 11:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field CallbackGasPrice", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowEvent
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthEvent
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLengthEvent
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.CallbackGasPrice = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
 		default:
 			iNdEx = preIndex
 			skippy, err := skipEvent(dAtA[iNdEx:])
diff --git a/x/oracle/types/expected_keepers.go b/x/oracle/types/expected_keepers.go
index 7bbc49fd00..72cc687d90 100644
--- a/x/oracle/types/expected_keepers.go
+++ b/x/oracle/types/expected_keepers.go
@@ -16,6 +16,7 @@ type StakingKeeper interface {
 type CrossChainKeeper interface {
 	CreateRawIBCPackageWithFee(ctx sdk.Context, channelID sdk.ChannelID,
 		packageType sdk.CrossChainPackageType, packageLoad []byte, relayerFee *big.Int, ackRelayerFee *big.Int,
+		callbackGasPrice *big.Int,
 	) (uint64, error)
 	GetCrossChainApp(channelID sdk.ChannelID) sdk.CrossChainApplication
 	GetSrcChainID() sdk.ChainID
diff --git a/x/params/types/proposal/proposal_test.go b/x/params/types/proposal/proposal_test.go
index 74592f3a2b..3e95c2a3c9 100644
--- a/x/params/types/proposal/proposal_test.go
+++ b/x/params/types/proposal/proposal_test.go
@@ -59,5 +59,4 @@ func TestCrossChainUpgradeProposal(t *testing.T) {
 
 	pcp = NewCrossChainParameterChangeProposal("test title", "test description", []ParamChange{pc2, pc3}, []string{"0x80C7Fa8FC825C5e622cdbcAEa0A22d188634BDd3", "0xA4A2957E858529FFABBBb483D1D704378a9fca6b"})
 	require.Equal(t, pcp.ValidateBasic(), ErrInvalidUpgradeProposal)
-
 }