diff --git a/docker/caddy/Dockerfile b/docker/caddy/Dockerfile
index f29ba72..8c5c6c0 100644
--- a/docker/caddy/Dockerfile
+++ b/docker/caddy/Dockerfile
@@ -39,4 +39,4 @@ EXPOSE 443
 EXPOSE 2015
 
 ENV TZ=Asia/Shanghai
-CMD [ "/usr/bin/caddy", "-conf", "/etc/caddy/Caddyfile", "-agree=$ACME_AGREE" ]
+CMD [ "/usr/bin/caddy", "--conf", "/etc/caddy/Caddyfile", "--agree=$ACME_AGREE" ]
diff --git a/docker/caddy/Dockerfile.architecture b/docker/caddy/Dockerfile.architecture
index f7fe7ab..132053e 100644
--- a/docker/caddy/Dockerfile.architecture
+++ b/docker/caddy/Dockerfile.architecture
@@ -40,4 +40,4 @@ EXPOSE 443
 EXPOSE 2015
 
 ENV TZ=Asia/Shanghai
-CMD [ "/usr/bin/caddy", "-conf", "/etc/caddy/Caddyfile", "-agree=$ACME_AGREE" ]
+CMD [ "/usr/bin/caddy", "--conf", "/etc/caddy/Caddyfile", "--agree=$ACME_AGREE" ]