diff --git a/duokai.sh b/duokai.sh
index 4e80db2..f9c0cdf 100644
--- a/duokai.sh
+++ b/duokai.sh
@@ -54,8 +54,7 @@ do
     # 进入容器并执行绑定和其他命令
     docker exec -it $container_id bash -c "\
         apt update -y; \
-        apt install wget -y; \
-        wget https://letsencrypt.org/certs/isrgrootx1.der; \
+        apt install ca-certificates -y; \
         titan-edge bind --hash=$id https://api-test1.container1.titannet.io/api/v2/device/binding"
 done