diff --git a/Dockerfile b/Dockerfile
index f6ece67..f4ffd59 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,11 @@
-FROM alpine:3.14 AS builder
+FROM alpine:3.15 AS builder
 LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"
 
 ARG TARGETPLATFORM
 
-ENV S6_OVERLAY_VERSION=v2.2.0.3
-ENV SHA256_amd64=a7076cf205b331e9f8479bbb09d9df77dbb5cd8f7d12e9b74920902e0c16dd98
-ENV SHA256_aarch64=84f585a100b610124bb80e441ef2dc2d68ac2c345fd393d75a6293e0951ccfc5
+ENV S6_OVERLAY_VERSION=v3.0.0.2
+ENV SHA256_amd64=a4c039d1515812ac266c24fe3fe3c00c48e3401563f7f11d09ac8e8b4c2d0b0c
+ENV SHA256_aarch64=e6c15e22dde00af4912d1f237392ac43a1777633b9639e003ba3b78f2d30eb33
 
 RUN apk --no-cache add \
     bash