diff --git a/go/grpc_server/grpc.go b/go/grpc_server/grpc.go
index b33cec2..772dd60 100644
--- a/go/grpc_server/grpc.go
+++ b/go/grpc_server/grpc.go
@@ -17,12 +17,9 @@ import (
 	"time"
 
 	"github.com/matsuridayo/libneko/neko_common"
-	"github.com/matsuridayo/libneko/neko_log"
 
 	grpc_auth "github.com/grpc-ecosystem/go-grpc-middleware/auth"
 	"google.golang.org/grpc"
-
-	"golang.org/x/time/rate"
 )
 
 type BaseServer struct {
@@ -44,8 +41,6 @@ func RunCore(setupCore func(), server gen.LibcoreServiceServer) {
 	flag.CommandLine.Parse(os.Args[2:])
 
 	neko_common.Debug = *_debug
-	neko_log.RateLimiter = rate.NewLimiter(rate.Limit(100), 150)
-	neko_log.RateLimitExit = true
 
 	go func() {
 		parent, err := os.FindProcess(os.Getppid())
diff --git a/libs/get_source_env.sh b/libs/get_source_env.sh
index fde9ff9..c714507 100644
--- a/libs/get_source_env.sh
+++ b/libs/get_source_env.sh
@@ -1,5 +1,5 @@
 if [ ! -z $ENV_NEKORAY ]; then
-  export COMMIT_SING_BOX_EXTRA="4768132c35fb9d92e4e9914b15391f29fad4821a"
+  export COMMIT_SING_BOX_EXTRA="d663cfa6b9f721d306ec3972460b61bb2c935685"
   export COMMIT_MATSURI_V2RAY="8134d3cc23aa6b8e2a056887addf22d7d22bd969"
 fi