diff --git a/Dockerfile b/Dockerfile
index 38067f4..a8857ae 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:ca7cf1f32bfd454db7517326d4282b6aa9794843e492f5d29a051d8758874d0b 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@sha256:1131a7f215fdcbf0543a7096fceddd2304f14608b3c2c852224f3ee6b3dd6a80
 
 COPY --from=builder /usr/bin/caddy /usr/bin/caddy
\ No newline at end of file