diff --git a/Dockerfile.multiarch b/Dockerfile.multiarch
index e1b58dc..9adf6c3 100644
--- a/Dockerfile.multiarch
+++ b/Dockerfile.multiarch
@@ -1,4 +1,4 @@
-FROM caddy:2.6.4-alpine
+FROM caddy:2.7.2-alpine@sha256:fa4988bd8dc2df962ba39a1621de3d0aad2c725fbdec99f3ae81f704e818943e
 
 LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
 LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"