diff --git a/beacon-chain/core/epoch/precompute/spectest/rewards_penalties_test.go b/beacon-chain/core/epoch/precompute/spectest/rewards_penalties_test.go
index 3de1cb277a..57b1bf4a90 100644
--- a/beacon-chain/core/epoch/precompute/spectest/rewards_penalties_test.go
+++ b/beacon-chain/core/epoch/precompute/spectest/rewards_penalties_test.go
@@ -7,7 +7,6 @@ import (
 	"testing"
 
 	"github.com/ghodss/yaml"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/epoch/precompute"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
 	beaconstate "github.com/prysmaticlabs/prysm/beacon-chain/state"
@@ -44,7 +43,7 @@ func runPrecomputeRewardsAndPenaltiesTest(t *testing.T, testFolderPath string) {
 	preBeaconStateFile, err := testutil.BazelFileBytes(path.Join(testFolderPath, "pre.ssz"))
 	require.NoError(t, err)
 	preBeaconStateBase := &pb.BeaconState{}
-	require.NoError(t, ssz.Unmarshal(preBeaconStateFile, preBeaconStateBase), "Failed to unmarshal")
+	require.NoError(t, preBeaconStateBase.UnmarshalSSZ(preBeaconStateFile), "Failed to unmarshal")
 	preBeaconState, err := beaconstate.InitializeFromProto(preBeaconStateBase)
 	require.NoError(t, err)
 
diff --git a/beacon-chain/state/stategen/BUILD.bazel b/beacon-chain/state/stategen/BUILD.bazel
index 12ee0980c7..6a2ac3f184 100644
--- a/beacon-chain/state/stategen/BUILD.bazel
+++ b/beacon-chain/state/stategen/BUILD.bazel
@@ -65,7 +65,6 @@ go_test(
         "//shared/testutil/require:go_default_library",
         "@com_github_gogo_protobuf//proto:go_default_library",
         "@com_github_prysmaticlabs_ethereumapis//eth/v1alpha1:go_default_library",
-        "@com_github_prysmaticlabs_go_ssz//:go_default_library",
         "@com_github_sirupsen_logrus//hooks/test:go_default_library",
     ],
 )
diff --git a/beacon-chain/state/stategen/getter_test.go b/beacon-chain/state/stategen/getter_test.go
index db724f1aed..9ec56e5922 100644
--- a/beacon-chain/state/stategen/getter_test.go
+++ b/beacon-chain/state/stategen/getter_test.go
@@ -5,7 +5,6 @@ import (
 	"testing"
 
 	"github.com/gogo/protobuf/proto"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/blocks"
 	testDB "github.com/prysmaticlabs/prysm/beacon-chain/db/testing"
 	pb "github.com/prysmaticlabs/prysm/proto/beacon/p2p/v1"
@@ -372,22 +371,22 @@ func TestLastAncestorState_CanGetUsingDB(t *testing.T) {
 
 	b0 := testutil.NewBeaconBlock()
 	b0.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
-	r0, err := ssz.HashTreeRoot(b0.Block)
+	r0, err := b0.Block.HashTreeRoot()
 	require.NoError(t, err)
 	b1 := testutil.NewBeaconBlock()
 	b1.Block.Slot = 1
 	b1.Block.ParentRoot = bytesutil.PadTo(r0[:], 32)
-	r1, err := ssz.HashTreeRoot(b1.Block)
+	r1, err := b1.Block.HashTreeRoot()
 	require.NoError(t, err)
 	b2 := testutil.NewBeaconBlock()
 	b2.Block.Slot = 2
 	b2.Block.ParentRoot = bytesutil.PadTo(r1[:], 32)
-	r2, err := ssz.HashTreeRoot(b2.Block)
+	r2, err := b2.Block.HashTreeRoot()
 	require.NoError(t, err)
 	b3 := testutil.NewBeaconBlock()
 	b3.Block.Slot = 3
 	b3.Block.ParentRoot = bytesutil.PadTo(r2[:], 32)
-	r3, err := ssz.HashTreeRoot(b3.Block)
+	r3, err := b3.Block.HashTreeRoot()
 	require.NoError(t, err)
 
 	b1State := testutil.NewBeaconState()
@@ -411,22 +410,22 @@ func TestLastAncestorState_CanGetUsingCache(t *testing.T) {
 
 	b0 := testutil.NewBeaconBlock()
 	b0.Block.ParentRoot = bytesutil.PadTo([]byte{'a'}, 32)
-	r0, err := ssz.HashTreeRoot(b0.Block)
+	r0, err := b0.Block.HashTreeRoot()
 	require.NoError(t, err)
 	b1 := testutil.NewBeaconBlock()
 	b1.Block.Slot = 1
 	b1.Block.ParentRoot = bytesutil.PadTo(r0[:], 32)
-	r1, err := ssz.HashTreeRoot(b1.Block)
+	r1, err := b1.Block.HashTreeRoot()
 	require.NoError(t, err)
 	b2 := testutil.NewBeaconBlock()
 	b2.Block.Slot = 2
 	b2.Block.ParentRoot = bytesutil.PadTo(r1[:], 32)
-	r2, err := ssz.HashTreeRoot(b2.Block)
+	r2, err := b2.Block.HashTreeRoot()
 	require.NoError(t, err)
 	b3 := testutil.NewBeaconBlock()
 	b3.Block.Slot = 3
 	b3.Block.ParentRoot = bytesutil.PadTo(r2[:], 32)
-	r3, err := ssz.HashTreeRoot(b3.Block)
+	r3, err := b3.Block.HashTreeRoot()
 	require.NoError(t, err)
 
 	b1State := testutil.NewBeaconState()
diff --git a/fuzz/block_fuzz.go b/fuzz/block_fuzz.go
index bbd85f5fc4..7e2b9dc5c2 100644
--- a/fuzz/block_fuzz.go
+++ b/fuzz/block_fuzz.go
@@ -13,7 +13,6 @@ import (
 	"github.com/libp2p/go-libp2p-core/peer"
 	pubsub "github.com/libp2p/go-libp2p-pubsub"
 	pubsub_pb "github.com/libp2p/go-libp2p-pubsub/pb"
-	"github.com/prysmaticlabs/go-ssz"
 	"github.com/prysmaticlabs/prysm/beacon-chain/blockchain"
 	"github.com/prysmaticlabs/prysm/beacon-chain/blockchain/testing"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/state"
@@ -69,7 +68,7 @@ func setupDB() {
 	if err := db1.SaveBlock(ctx, b); err != nil {
 		panic(err)
 	}
-	br, err := ssz.HashTreeRoot(b)
+	br, err := b.HashTreeRoot()
 	if err != nil {
 		panic(err)
 	}