diff --git a/VLESS-GRPC/README.md b/VLESS-GRPC/README.md
index 2407293..151e42d 100644
--- a/VLESS-GRPC/README.md
+++ b/VLESS-GRPC/README.md
@@ -24,6 +24,7 @@ server {
 			return 404;
 		}
 		client_max_body_size 0;
+		client_body_buffer_size 512k;
 		grpc_set_header X-Real-IP $remote_addr;
 		client_body_timeout 52w;
 		grpc_read_timeout 52w;