diff --git a/docker/caddy/Caddyfile b/docker/caddy/Caddyfile
index 0919b586..0502a727 100644
--- a/docker/caddy/Caddyfile
+++ b/docker/caddy/Caddyfile
@@ -9,6 +9,7 @@
     siasky.net, *.siasky.net, *.hns.siasky.net {
         tls {
             dns route53
+            ttl 2m
         }
         reverse_proxy nginx:80
     }
diff --git a/docker/caddy/Dockerfile b/docker/caddy/Dockerfile
index d0f22045..7b670287 100644
--- a/docker/caddy/Dockerfile
+++ b/docker/caddy/Dockerfile
@@ -1,7 +1,8 @@
-FROM caddy:2.1.1-builder AS caddy-builder
+FROM caddy:2.2.0-builder AS caddy-builder
 
-RUN caddy-builder github.com/caddy-dns/cloudflare github.com/caddy-dns/route53
+# available dns resolvers: https://github.com/caddy-dns
+RUN xcaddy build --with github.com/caddy-dns/route53
 
-FROM caddy:2.1.1
+FROM caddy:2.2.0
 
 COPY --from=caddy-builder /usr/bin/caddy /usr/bin/caddy