diff --git a/consensus/polybft/stake_manager_test.go b/consensus/polybft/stake_manager_test.go
index 5c3e6b3de9..963fea7101 100644
--- a/consensus/polybft/stake_manager_test.go
+++ b/consensus/polybft/stake_manager_test.go
@@ -362,10 +362,10 @@ func Test_MarshalBug(t *testing.T) {
 		return obj(ar).MarshalTo(nil)
 	}
 
+	emptyArray := [8]byte{}
 	corruptedSlice := make([]byte, 32)
 	corruptedSlice[29], corruptedSlice[30], corruptedSlice[31] = 5, 126, 64
-
-	intOfCorruption := uint64(8989232334)
+	intOfCorruption := uint64(18_446_744_073_709_551_615) // 2^64-1
 
 	marshalOne := func(ar *fastrlp.Arena) *fastrlp.Value {
 		return ar.NewBytes(corruptedSlice)
@@ -375,14 +375,11 @@ func Test_MarshalBug(t *testing.T) {
 		return ar.NewUint(intOfCorruption)
 	}
 
-	check := func() {
-		for i := 0; i < 8; i++ {
-			require.Equal(t, byte(0), corruptedSlice[i])
-		}
-	}
-
 	marshal(marshalOne)
-	check()
+
+	require.Equal(t, emptyArray[:], corruptedSlice[:len(emptyArray)])
+
 	marshal(marshalTwo) // without fixing this, marshaling will cause corruption of the corrupted slice
-	check()
+
+	require.NotEqual(t, emptyArray[:], corruptedSlice[:len(emptyArray)])
 }
diff --git a/go.mod b/go.mod
index eb359939df..c96372f077 100644
--- a/go.mod
+++ b/go.mod
@@ -228,5 +228,3 @@ require (
 	gotest.tools/v3 v3.0.2 // indirect
 	inet.af/netaddr v0.0.0-20220617031823-097006376321 // indirect
 )
-
-replace github.com/umbracle/fastrlp => github.com/igorcrevar/fastrlp v0.0.0-20230503111411-4717b7e20c16
diff --git a/go.sum b/go.sum
index fbd6c2d545..6b82a78ec1 100644
--- a/go.sum
+++ b/go.sum
@@ -327,8 +327,6 @@ github.com/huin/goupnp v1.0.3 h1:N8No57ls+MnjlB+JPiCVSOyy/ot7MJTqlo7rn+NYSqQ=
 github.com/huin/goupnp v1.0.3/go.mod h1:ZxNlw5WqJj6wSsRK5+YfflQGXYfccj5VgQsMNixHM7Y=
 github.com/huin/goutil v0.0.0-20170803182201-1ca381bf3150/go.mod h1:PpLOETDnJ0o3iZrZfqZzyLl6l7F3c6L1oWn7OICBi6o=
 github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
-github.com/igorcrevar/fastrlp v0.0.0-20230503111411-4717b7e20c16 h1:V48deMz/8zv8Cc/7kLjkTiaHz6Y1D3ZI7rQw0b0QRVs=
-github.com/igorcrevar/fastrlp v0.0.0-20230503111411-4717b7e20c16/go.mod h1:5RHgqiFjd4vLJESMWagP/E7su+5Gzk0iqqmrotR8WdA=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
@@ -680,6 +678,8 @@ github.com/ugorji/go/codec v1.1.7 h1:2SvQaVZ1ouYrrKKwoSk2pzd4A9evlKJb9oTL+OaLUSs
 github.com/ugorji/go/codec v1.1.7/go.mod h1:Ax+UKWsSmolVDwsd+7N3ZtXu+yMGCf907BLYF3GoBXY=
 github.com/umbracle/ethgo v0.1.4-0.20230326234627-15b1df435098 h1:OXYAHR6AKpV2A/BjQNECXod9rR8r5XOT2QCakD2r0YQ=
 github.com/umbracle/ethgo v0.1.4-0.20230326234627-15b1df435098/go.mod h1:bjxSp984qsxCStKoKjqz5fgugi4uWj6+/tFkSEpjk3A=
+github.com/umbracle/fastrlp v0.1.0 h1:V0W3f6ZKWqbu1KggdhnRWOi+t7+PfL3VyAffJqayI5s=
+github.com/umbracle/fastrlp v0.1.0/go.mod h1:5RHgqiFjd4vLJESMWagP/E7su+5Gzk0iqqmrotR8WdA=
 github.com/umbracle/go-eth-bn256 v0.0.0-20230125114011-47cb310d9b0b h1:5/xofhZiOG0I9DQXqDSPxqYObk6QI7mBGMJI+ngyIgc=
 github.com/umbracle/go-eth-bn256 v0.0.0-20230125114011-47cb310d9b0b/go.mod h1:H8SeC2PWEciymT92Mt07Qcfjr2FMEuCz/V+KPtPTy+U=
 github.com/urfave/cli v1.22.2/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
diff --git a/types/rlp_marshal.go b/types/rlp_marshal.go
index cc9d3c32ec..70982e7d5a 100644
--- a/types/rlp_marshal.go
+++ b/types/rlp_marshal.go
@@ -75,12 +75,12 @@ func (h *Header) MarshalRLPTo(dst []byte) []byte {
 func (h *Header) MarshalRLPWith(arena *fastrlp.Arena) *fastrlp.Value {
 	vv := arena.NewArray()
 
-	vv.Set(arena.NewBytes(h.ParentHash.Bytes()))
-	vv.Set(arena.NewBytes(h.Sha3Uncles.Bytes()))
+	vv.Set(arena.NewCopyBytes(h.ParentHash.Bytes()))
+	vv.Set(arena.NewCopyBytes(h.Sha3Uncles.Bytes()))
 	vv.Set(arena.NewCopyBytes(h.Miner[:]))
-	vv.Set(arena.NewBytes(h.StateRoot.Bytes()))
-	vv.Set(arena.NewBytes(h.TxRoot.Bytes()))
-	vv.Set(arena.NewBytes(h.ReceiptsRoot.Bytes()))
+	vv.Set(arena.NewCopyBytes(h.StateRoot.Bytes()))
+	vv.Set(arena.NewCopyBytes(h.TxRoot.Bytes()))
+	vv.Set(arena.NewCopyBytes(h.ReceiptsRoot.Bytes()))
 	vv.Set(arena.NewCopyBytes(h.LogsBloom[:]))
 
 	vv.Set(arena.NewUint(h.Difficulty))
@@ -90,7 +90,7 @@ func (h *Header) MarshalRLPWith(arena *fastrlp.Arena) *fastrlp.Value {
 	vv.Set(arena.NewUint(h.Timestamp))
 
 	vv.Set(arena.NewCopyBytes(h.ExtraData))
-	vv.Set(arena.NewBytes(h.MixHash.Bytes()))
+	vv.Set(arena.NewCopyBytes(h.MixHash.Bytes()))
 	vv.Set(arena.NewCopyBytes(h.Nonce[:]))
 
 	vv.Set(arena.NewUint(h.BaseFee))
@@ -135,7 +135,7 @@ func (r *Receipt) MarshalRLPWith(a *fastrlp.Arena) *fastrlp.Value {
 	if r.Status != nil {
 		vv.Set(a.NewUint(uint64(*r.Status)))
 	} else {
-		vv.Set(a.NewBytes(r.Root[:]))
+		vv.Set(a.NewCopyBytes(r.Root[:]))
 	}
 
 	vv.Set(a.NewUint(r.CumulativeGasUsed))
@@ -163,15 +163,15 @@ func (r *Receipt) MarshalLogsWith(a *fastrlp.Arena) *fastrlp.Value {
 
 func (l *Log) MarshalRLPWith(a *fastrlp.Arena) *fastrlp.Value {
 	v := a.NewArray()
-	v.Set(a.NewBytes(l.Address.Bytes()))
+	v.Set(a.NewCopyBytes(l.Address.Bytes()))
 
 	topics := a.NewArray()
 	for _, t := range l.Topics {
-		topics.Set(a.NewBytes(t.Bytes()))
+		topics.Set(a.NewCopyBytes(t.Bytes()))
 	}
 
 	v.Set(topics)
-	v.Set(a.NewBytes(l.Data))
+	v.Set(a.NewCopyBytes(l.Data))
 
 	return v
 }
@@ -215,7 +215,7 @@ func (t *Transaction) MarshalRLPWith(arena *fastrlp.Arena) *fastrlp.Value {
 
 	// Address may be empty
 	if t.To != nil {
-		vv.Set(arena.NewBytes((*t.To).Bytes()))
+		vv.Set(arena.NewCopyBytes((*t.To).Bytes()))
 	} else {
 		vv.Set(arena.NewNull())
 	}
@@ -237,7 +237,7 @@ func (t *Transaction) MarshalRLPWith(arena *fastrlp.Arena) *fastrlp.Value {
 	vv.Set(arena.NewBigInt(t.S))
 
 	if t.Type == StateTx {
-		vv.Set(arena.NewBytes((t.From).Bytes()))
+		vv.Set(arena.NewCopyBytes(t.From.Bytes()))
 	}
 
 	return vv