diff --git a/client/client.go b/client/client.go
index 757f452..70f5f33 100644
--- a/client/client.go
+++ b/client/client.go
@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"log"
 	"math/big"
+	"strconv"
 
 	"github.com/coinbase/rosetta-geth-sdk/configuration"
 	sdkTypes "github.com/coinbase/rosetta-geth-sdk/types"
@@ -39,7 +40,6 @@ import (
 	"github.com/ethereum/go-ethereum/p2p"
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/ethereum/go-ethereum/rpc"
-	"github.com/holiman/uint256"
 	"golang.org/x/sync/semaphore"
 )
 
@@ -574,18 +574,18 @@ func FlattenTraces(data *Call, flattened []*FlatCall) []*FlatCall {
 // https://github.com/ethereum/go-ethereum/blob/master/consensus/ethash/consensus.go#L646-L653
 func (ec *SDKClient) miningReward(
 	currentBlock *big.Int,
-) *uint256.Int {
+) int64 {
 	if currentBlock.Int64() == int64(0) {
-		return uint256.NewInt(0)
+		return big.NewInt(0).Int64()
 	}
 
-	blockReward := ethash.FrontierBlockReward
+	blockReward := ethash.FrontierBlockReward.Int64()
 
 	if ec.P.IsByzantium(currentBlock) {
-		blockReward = ethash.ByzantiumBlockReward
+		blockReward = ethash.ByzantiumBlockReward.Int64()
 	}
 	if ec.P.IsConstantinople(currentBlock) {
-		blockReward = ethash.ConstantinopleBlockReward
+		blockReward = ethash.ConstantinopleBlockReward.Int64()
 	}
 
 	return blockReward
@@ -610,12 +610,12 @@ func (ec *SDKClient) BlockRewardTransaction(
 	if len(uncles) > 0 {
 		reward := new(big.Float)
 		uncleReward := float64(numUncles) / sdkTypes.UnclesRewardMultiplier
-		rewardFloat := reward.Mul(big.NewFloat(uncleReward), big.NewFloat(miningReward.Float64()))
-		rewardInt := new(big.Int)
-		rewardFloat.Int(rewardInt)
-		minerReward.Add(minerReward, uint256.MustFromBig(rewardInt))
+		rewardFloat := reward.Mul(big.NewFloat(uncleReward), big.NewFloat(float64(miningReward)))
+		rewardInt, _ := rewardFloat.Int64()
+		minerReward += rewardInt
 	}
 
+	const base = 10
 	miningRewardOp := &RosettaTypes.Operation{
 		OperationIdentifier: &RosettaTypes.OperationIdentifier{
 			Index: 0,
@@ -626,7 +626,7 @@ func (ec *SDKClient) BlockRewardTransaction(
 			Address: MustChecksum(miner),
 		},
 		Amount: &RosettaTypes.Amount{
-			Value:    minerReward.Dec(),
+			Value:    strconv.FormatInt(minerReward, base),
 			Currency: ec.rosettaConfig.Currency,
 		},
 	}
@@ -636,13 +636,11 @@ func (ec *SDKClient) BlockRewardTransaction(
 	for _, b := range uncles {
 		uncleMiner := b.Coinbase.String()
 		uncleBlock := b.Number.Int64()
-		miningRewardPerUncle := minerReward.Clone()
-		miningRewardPerUncle.Div(miningRewardPerUncle, uint256.NewInt(sdkTypes.MaxUncleDepth))
 		uncleRewardBlock := new(
 			big.Int,
 		).Mul(
 			big.NewInt(uncleBlock+sdkTypes.MaxUncleDepth-blockIdentifier.Index),
-			miningRewardPerUncle.ToBig(),
+			big.NewInt(miningReward/sdkTypes.MaxUncleDepth),
 		)
 
 		uncleRewardOp := &RosettaTypes.Operation{
diff --git a/go.mod b/go.mod
index a03ded5..8bfd6a4 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.20
 
 require (
 	github.com/coinbase/rosetta-sdk-go v0.8.2
-	github.com/ethereum/go-ethereum v1.13.14
+	github.com/ethereum/go-ethereum v1.13.8
 	github.com/holiman/uint256 v1.2.4
 	github.com/neilotoole/errgroup v0.1.6
 	github.com/stretchr/testify v1.8.4
diff --git a/go.sum b/go.sum
index 8e815ba..ac6514d 100644
--- a/go.sum
+++ b/go.sum
@@ -134,13 +134,13 @@ github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7
 github.com/etcd-io/bbolt v1.3.3/go.mod h1:ZF2nL25h33cCyBtcyWeZ2/I3HQOfTP+0PIEvHjkjCrw=
 github.com/ethereum/c-kzg-4844 v0.4.0 h1:3MS1s4JtA868KpJxroZoepdV0ZKBp3u/O5HcZ7R3nlY=
 github.com/ethereum/c-kzg-4844 v0.4.0/go.mod h1:VewdlzQmpT5QSrVhbBuGoCdFJkpaJlO1aQputP83wc0=
-github.com/ethereum/go-ethereum v1.13.14 h1:EwiY3FZP94derMCIam1iW4HFVrSgIcpsu0HwTQtm6CQ=
-github.com/ethereum/go-ethereum v1.13.14/go.mod h1:TN8ZiHrdJwSe8Cb6x+p0hs5CxhJZPbqB7hHkaUXcmIU=
+github.com/ethereum/go-ethereum v1.13.8 h1:1od+thJel3tM52ZUNQwvpYOeRHlbkVFZ5S8fhi0Lgsg=
+github.com/ethereum/go-ethereum v1.13.8/go.mod h1:sc48XYQxCzH3fG9BcrXCOOgQk2JfZzNAmIKnceogzsA=
 github.com/fasthttp-contrib/websocket v0.0.0-20160511215533-1f3b11f56072/go.mod h1:duJ4Jxv5lDcvg4QuQr0oowTf7dz4/CR8NtyCooz9HL8=
 github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w=
 github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
-github.com/fjl/memsize v0.0.2 h1:27txuSD9or+NZlnOWdKUxeBzTAUkWCVh+4Gf2dWFOzA=
+github.com/fjl/memsize v0.0.0-20190710130421-bcb5799ab5e5 h1:FtmdgXiUlNeRsoNMFlKLDt+S+6hbjVMEW6RGQ7aUf7c=
 github.com/flosch/pongo2 v0.0.0-20190707114632-bbf5a6c351f4/go.mod h1:T9YF2M40nIgbVgp3rreNmTged+9HrbNTIQf1PsaIiTA=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -257,7 +257,7 @@ github.com/hashicorp/go-version v1.2.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
-github.com/holiman/billy v0.0.0-20240216141850-2abb0c79d3c4 h1:X4egAf/gcS1zATw6wn4Ej8vjuVGxeHdan+bRb2ebyv4=
+github.com/holiman/billy v0.0.0-20230718173358-1c7e68d277a7 h1:3JQNjnMRil1yD0IfZKHF9GxxWKDJGj8I0IqOUol//sw=
 github.com/holiman/bloomfilter/v2 v2.0.3 h1:73e0e/V0tCydx14a0SCYS/EWCxgwLZ18CZcZKVu0fao=
 github.com/holiman/bloomfilter/v2 v2.0.3/go.mod h1:zpoh+gs7qcpqrHr3dB55AMiJwo0iURXE7ZOP9L9hSkA=
 github.com/holiman/uint256 v1.2.4 h1:jUc4Nk8fm9jZabQuqr2JzednajVmBpC+oiTiXZJEApU=