diff --git a/Dockerfile b/Dockerfile
index 0425bc3..f5163c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,11 @@
-FROM alpine:3.12 AS builder
+FROM alpine:3.13.1 AS builder
 LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"
 
 ARG TARGETPLATFORM
 
-ENV S6_OVERLAY_VERSION=v2.1.0.2
-ENV SHA256_amd64=52460473413601ff7a84ae690b161a074217ddc734990c2cdee9847166cf669e
-ENV SHA256_aarch64=6783da208a23141e09cf9e02e923c4f01555b83d5cb33bf32d226b4b1edbaf7c
+ENV S6_OVERLAY_VERSION=v2.2.0.1
+ENV SHA256_amd64=2dcb59b63d1d0f5f056d4e10d6cbae21a9c216e130080d3b5aaa8e7325ac571b
+ENV SHA256_aarch64=500476317b688b314fd64d3cb8b38114c6d011baaa124a16b01bdf284cf0fb76
 
 RUN apk --no-cache add \
     bash
@@ -15,7 +15,7 @@ RUN ./fetch-platform-rootfs
 RUN mkdir /overlay
 RUN tar -xvf s6-overlay.tar.gz -C /overlay
 
-FROM alpine:3.12
+FROM alpine:3.13.1
 
 ENV LANG=en_US.UTF-8