diff --git a/Dockerfile b/Dockerfile
index 38067f4..ad605da 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
-FROM caddy:2.8.4-builder-alpine@sha256:edc6e5121f18919c8f0acb4c578a271ce1806d1a5f0bfd15180b17eedcccd793 AS builder
+FROM caddy:2.9.1-builder-alpine@sha256:bfa436d2711d1294501ba0f72f149d8c5dad237fc8e9c9b9aec682df8438ec73 AS builder
 
 RUN xcaddy build \
     --with github.com/caddy-dns/rfc2136@master
 
-FROM caddy:2.8.4-alpine@sha256:e97e0e3f8f51be708a9d5fadbbd75e3398c22fc0eecd4b26d48561e3f7daa9eb
+FROM caddy:2.9.1-alpine@sha256:e70ccf0c9821a88303671ef22d7b5e2d2b6057a8b18703022d755ba4d5fd35cd
 
 COPY --from=builder /usr/bin/caddy /usr/bin/caddy
\ No newline at end of file