diff --git a/modules/core/ante/ante.go b/modules/core/ante/ante.go
index 7b8cdb326de..ac42d8289a6 100644
--- a/modules/core/ante/ante.go
+++ b/modules/core/ante/ante.go
@@ -1,11 +1,20 @@
 package ante
 
 import (
+	errorsmod "cosmossdk.io/errors"
+
 	sdk "github.com/cosmos/cosmos-sdk/types"
 
+<<<<<<< HEAD
 	clienttypes "github.com/cosmos/ibc-go/v7/modules/core/02-client/types"
 	channeltypes "github.com/cosmos/ibc-go/v7/modules/core/04-channel/types"
 	"github.com/cosmos/ibc-go/v7/modules/core/keeper"
+=======
+	clienttypes "github.com/cosmos/ibc-go/v8/modules/core/02-client/types"
+	channeltypes "github.com/cosmos/ibc-go/v8/modules/core/04-channel/types"
+	"github.com/cosmos/ibc-go/v8/modules/core/exported"
+	"github.com/cosmos/ibc-go/v8/modules/core/keeper"
+>>>>>>> 3da48308 (imp: add updateClientCheckTx to redunant relayer ante decorator (#6279))
 )
 
 type RedundantRelayDecorator struct {
@@ -70,8 +79,12 @@ func (rrd RedundantRelayDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 				packetMsgs++
 
 			case *clienttypes.MsgUpdateClient:
+<<<<<<< HEAD
 				_, err := rrd.k.UpdateClient(sdk.WrapSDKContext(ctx), msg)
 				if err != nil {
+=======
+				if err := rrd.updateClientCheckTx(ctx, msg); err != nil {
+>>>>>>> 3da48308 (imp: add updateClientCheckTx to redunant relayer ante decorator (#6279))
 					return ctx, err
 				}
 
@@ -90,3 +103,34 @@ func (rrd RedundantRelayDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simula
 	}
 	return next(ctx, tx, simulate)
 }
+
+// updateClientCheckTx runs a subset of ibc client update logic to be used specifically within the RedundantRelayDecorator AnteHandler.
+// The following function performs ibc client message verification for CheckTx only and state updates in both CheckTx and ReCheckTx.
+// Note that misbehaviour checks are omitted.
+func (rrd RedundantRelayDecorator) updateClientCheckTx(ctx sdk.Context, msg *clienttypes.MsgUpdateClient) error {
+	clientMsg, err := clienttypes.UnpackClientMessage(msg.ClientMessage)
+	if err != nil {
+		return err
+	}
+
+	if status := rrd.k.ClientKeeper.GetClientStatus(ctx, msg.ClientId); status != exported.Active {
+		return errorsmod.Wrapf(clienttypes.ErrClientNotActive, "cannot update client (%s) with status %s", msg.ClientId, status)
+	}
+
+	clientModule, found := rrd.k.ClientKeeper.Route(msg.ClientId)
+	if !found {
+		return errorsmod.Wrap(clienttypes.ErrRouteNotFound, msg.ClientId)
+	}
+
+	if !ctx.IsReCheckTx() {
+		if err := clientModule.VerifyClientMessage(ctx, msg.ClientId, clientMsg); err != nil {
+			return err
+		}
+	}
+
+	heights := clientModule.UpdateState(ctx, msg.ClientId, clientMsg)
+
+	ctx.Logger().With("module", "x/"+exported.ModuleName).Debug("ante ibc client update", "consensusHeights", heights)
+
+	return nil
+}
diff --git a/modules/core/ante/ante_test.go b/modules/core/ante/ante_test.go
index aca0fefd9a7..fe3a2836e3e 100644
--- a/modules/core/ante/ante_test.go
+++ b/modules/core/ante/ante_test.go
@@ -3,16 +3,33 @@ package ante_test
 import (
 	"testing"
 
+<<<<<<< HEAD
+=======
+	"github.com/stretchr/testify/require"
+	testifysuite "github.com/stretchr/testify/suite"
+
+	codectypes "github.com/cosmos/cosmos-sdk/codec/types"
+>>>>>>> 3da48308 (imp: add updateClientCheckTx to redunant relayer ante decorator (#6279))
 	sdk "github.com/cosmos/cosmos-sdk/types"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 
+<<<<<<< HEAD
 	clienttypes "github.com/cosmos/ibc-go/v7/modules/core/02-client/types"
 	channeltypes "github.com/cosmos/ibc-go/v7/modules/core/04-channel/types"
 	host "github.com/cosmos/ibc-go/v7/modules/core/24-host"
 	"github.com/cosmos/ibc-go/v7/modules/core/ante"
 	"github.com/cosmos/ibc-go/v7/modules/core/exported"
 	ibctesting "github.com/cosmos/ibc-go/v7/testing"
+=======
+	clienttypes "github.com/cosmos/ibc-go/v8/modules/core/02-client/types"
+	channeltypes "github.com/cosmos/ibc-go/v8/modules/core/04-channel/types"
+	host "github.com/cosmos/ibc-go/v8/modules/core/24-host"
+	"github.com/cosmos/ibc-go/v8/modules/core/ante"
+	"github.com/cosmos/ibc-go/v8/modules/core/exported"
+	ibctm "github.com/cosmos/ibc-go/v8/modules/light-clients/07-tendermint"
+	ibctesting "github.com/cosmos/ibc-go/v8/testing"
+>>>>>>> 3da48308 (imp: add updateClientCheckTx to redunant relayer ante decorator (#6279))
 )
 
 type AnteTestSuite struct {
@@ -386,6 +403,39 @@ func (suite *AnteTestSuite) TestAnteDecorator() {
 			},
 			false,
 		},
+		{
+			"no success on one new UpdateClient message: invalid client identifier",
+			func(suite *AnteTestSuite) []sdk.Msg {
+				clientMsg, err := codectypes.NewAnyWithValue(&ibctm.Header{})
+				suite.Require().NoError(err)
+
+				msgs := []sdk.Msg{&clienttypes.MsgUpdateClient{ClientId: ibctesting.InvalidID, ClientMessage: clientMsg}}
+				return msgs
+			},
+			false,
+		},
+		{
+			"no success on one new UpdateClient message: client module not found",
+			func(suite *AnteTestSuite) []sdk.Msg {
+				clientMsg, err := codectypes.NewAnyWithValue(&ibctm.Header{})
+				suite.Require().NoError(err)
+
+				msgs := []sdk.Msg{&clienttypes.MsgUpdateClient{ClientId: clienttypes.FormatClientIdentifier("08-wasm", 1), ClientMessage: clientMsg}}
+				return msgs
+			},
+			false,
+		},
+		{
+			"no success on one new UpdateClient message: no consensus state for trusted height",
+			func(suite *AnteTestSuite) []sdk.Msg {
+				clientMsg, err := codectypes.NewAnyWithValue(&ibctm.Header{TrustedHeight: clienttypes.NewHeight(1, 10000)})
+				suite.Require().NoError(err)
+
+				msgs := []sdk.Msg{&clienttypes.MsgUpdateClient{ClientId: suite.path.EndpointA.ClientID, ClientMessage: clientMsg}}
+				return msgs
+			},
+			false,
+		},
 		{
 			"no success on three new UpdateClient messages and three redundant messages of each type",
 			func(suite *AnteTestSuite) []sdk.Msg {