diff --git a/Dockerfile b/Dockerfile
index 0dfa289..ba11f85 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-FROM docker.io/alpine:3.17 AS builder
+FROM docker.io/alpine:3.18 AS builder
 LABEL maintainer="Sebastian Hugentobler <sebastian@vanwa.ch>"
 
-ENV S6_OVERLAY_VERSION=v3.1.3.0
+ENV S6_OVERLAY_VERSION=v3.1.5.0
 
 RUN apk --no-cache add \
 	git \
@@ -17,7 +17,7 @@ RUN git checkout "$S6_OVERLAY_VERSION"
 RUN make ARCH=x86_64-linux-musl -j4
 
 
-FROM docker.io/alpine:3.17
+FROM docker.io/alpine:3.18
 
 ENV LANG=en_US.UTF-8
 ENV S6_KEEP_ENV=1