diff --git a/caddy/Dockerfile.caddy b/caddy/Dockerfile.caddy
index db434d6..d1b29e5 100644
--- a/caddy/Dockerfile.caddy
+++ b/caddy/Dockerfile.caddy
@@ -1,10 +1,13 @@
-# Caddy mit Cloudflare-DNS + replace-response bauen
-FROM caddy:2.8-builder AS builder
-RUN xcaddy build \
+# Dockerfile.caddy
+ARG CADDY_VERSION=v2.9.1
+
+FROM caddy:${CADDY_VERSION}-builder AS builder
+# Caddy in exakt dieser Version + Plugins bauen
+RUN xcaddy build ${CADDY_VERSION} \
   --with github.com/caddy-dns/cloudflare \
   --with github.com/caddyserver/replace-response
 
-FROM caddy:2.8
+FROM caddy:${CADDY_VERSION}
 COPY --from=builder /usr/bin/caddy /usr/bin/caddy
-# (optional) Ort für Logs
 RUN mkdir -p /var/log/caddy
+