diff --git a/p2p/host.go b/p2p/host.go
index aeafea7dc..18dce6a46 100644
--- a/p2p/host.go
+++ b/p2p/host.go
@@ -11,13 +11,6 @@ import (
 	"sync"
 	"time"
 
-	"github.com/harmony-one/bls/ffi/go/bls"
-	nodeconfig "github.com/harmony-one/harmony/internal/configs/node"
-	"github.com/harmony-one/harmony/internal/utils"
-	"github.com/harmony-one/harmony/internal/utils/blockedpeers"
-	"github.com/harmony-one/harmony/p2p/discovery"
-	"github.com/harmony-one/harmony/p2p/security"
-	sttypes "github.com/harmony-one/harmony/p2p/stream/types"
 	"github.com/libp2p/go-libp2p"
 	dht "github.com/libp2p/go-libp2p-kad-dht"
 	libp2p_pubsub "github.com/libp2p/go-libp2p-pubsub"
diff --git a/p2p/security/security.go b/p2p/security/security.go
index e9523cd02..f8d032253 100644
--- a/p2p/security/security.go
+++ b/p2p/security/security.go
@@ -3,16 +3,18 @@ package security
 import (
 	"fmt"
 	"sync"
+	"time"
 
+	"github.com/harmony-one/harmony/internal/utils"
 	"github.com/harmony-one/harmony/internal/utils/blockedpeers"
-	libp2p_network "github.com/libp2p/go-libp2p/core/network"
+	libp2pnetwork "github.com/libp2p/go-libp2p/core/network"
 	ma "github.com/multiformats/go-multiaddr"
 	"github.com/pkg/errors"
 )
 
 type Security interface {
-	OnConnectCheck(net libp2p_network.Network, conn libp2p_network.Conn) error
-	OnDisconnectCheck(conn libp2p_network.Conn) error
+	OnConnectCheck(net libp2pnetwork.Network, conn libp2pnetwork.Conn) error
+	OnDisconnectCheck(conn libp2pnetwork.Conn) error
 }
 
 type peerMap struct {
@@ -85,7 +87,7 @@ func (m *Manager) RangePeers(f func(key string, value []string) bool) {
 	m.peers.Range(f)
 }
 
-func (m *Manager) OnConnectCheck(net libp2p_network.Network, conn libp2p_network.Conn) error {
+func (m *Manager) OnConnectCheck(net libp2pnetwork.Network, conn libp2pnetwork.Conn) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
@@ -131,7 +133,7 @@ func (m *Manager) OnConnectCheck(net libp2p_network.Network, conn libp2p_network
 	return nil
 }
 
-func (m *Manager) OnDisconnectCheck(conn libp2p_network.Conn) error {
+func (m *Manager) OnDisconnectCheck(conn libp2pnetwork.Conn) error {
 	m.mutex.Lock()
 	defer m.mutex.Unlock()
 
@@ -169,7 +171,7 @@ func find(slice []string, val string) (int, bool) {
 	return -1, false
 }
 
-func getRemoteIP(conn libp2p_network.Conn) (string, error) {
+func getRemoteIP(conn libp2pnetwork.Conn) (string, error) {
 	for _, protocol := range conn.RemoteMultiaddr().Protocols() {
 		switch protocol.Code {
 		case ma.P_IP4:
diff --git a/p2p/security/security_test.go b/p2p/security/security_test.go
index 79a2dac28..7d610707e 100644
--- a/p2p/security/security_test.go
+++ b/p2p/security/security_test.go
@@ -3,10 +3,10 @@ package security
 import (
 	"context"
 	"fmt"
-	"github.com/harmony-one/harmony/internal/utils/blockedpeers"
 	"testing"
 	"time"
 
+	"github.com/harmony-one/harmony/internal/utils/blockedpeers"
 	"github.com/libp2p/go-libp2p"
 	ic "github.com/libp2p/go-libp2p/core/crypto"
 	"github.com/libp2p/go-libp2p/core/host"