diff --git a/room_test.go b/room_test.go
index f3fc3ef..e876f80 100644
--- a/room_test.go
+++ b/room_test.go
@@ -54,6 +54,7 @@ func TestRoomCreateAndClose(t *testing.T) {
 }
 
 func TestRoomJoinLeftEvent(t *testing.T) {
+	t.Parallel()
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
@@ -116,6 +117,7 @@ func TestRoomJoinLeftEvent(t *testing.T) {
 }
 
 func TestRoomStats(t *testing.T) {
+	t.Parallel()
 	var (
 		totalClientIngressBytes uint64
 		totalClientEgressBytes  uint64
@@ -125,7 +127,7 @@ func TestRoomStats(t *testing.T) {
 	defer cancel()
 
 	// create room manager first before create new room
-	roomManager := NewManager(ctx, "test-join-left", Options{WebRTCPort: 40000})
+	roomManager := NewManager(ctx, "test-join-left", Options{WebRTCPort: 40001})
 
 	roomID := roomManager.CreateRoomID()
 	roomName := "test-room"
diff --git a/sfu_test.go b/sfu_test.go
index faa86f3..252f633 100644
--- a/sfu_test.go
+++ b/sfu_test.go
@@ -13,6 +13,7 @@ import (
 )
 
 func TestActiveTracks(t *testing.T) {
+	t.Parallel()
 	// _ = os.Setenv("PION_LOG_DEBUG", "pc,dtls")
 	// _ = os.Setenv("PION_LOG_TRACE", "ice")
 	// _ = os.Setenv("PIONS_LOG_INFO", "all")