diff --git a/Dockerfile b/Dockerfile
index 96d2ed3..6637c89 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM caddy:2.7.6-builder-alpine@sha256:8908a1985d23716b6baf8c781031a74c0de3a18c1524b28e51f1e36a747d18ea AS builder
+FROM caddy:2.7.6-builder-alpine@sha256:40170f4b62181b00e1bcd663e5bc80d6d43533840be49e72a214ddbc15ac52a0 AS builder
 RUN xcaddy build --with github.com/lucaslorentz/caddy-docker-proxy/v2
 FROM caddy:2.7.6-alpine@sha256:80ca561981768b2c3568cc4bef3d4cd1f11c2a625c806bedeb8453aef98779a0
 COPY --from=builder /usr/bin/caddy /usr/bin/caddy