diff --git a/docker/update.sh b/docker/update.sh
index 3fc309d..e00dd47 100644
--- a/docker/update.sh
+++ b/docker/update.sh
@@ -2,9 +2,9 @@
 
 set -u
 if [ "${ACME_ENABLED:=true}" = "true" ]; then
-  ${ACME_HOME}/acme.sh --set-default-ca --server letsencrypt
+  ${ACME_HOME} --set-default-ca --server letsencrypt
   # 使用acme获取/更新证书
-  ${ACME_HOME}/acme.sh ${ACME_PARAMS:-}  \
+  ${ACME_HOME} ${ACME_PARAMS:-}  \
   --force --issue --cert-home ${CERT_HOME} \
   -d ${ACME_DOMAIN} -d *.${ACME_DOMAIN} \
   --dns ${ACME_DNS_TYPE}