diff --git a/Dockerfile b/Dockerfile
index 862be99..e423a40 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.19-alpine3.17 AS builder
+FROM golang:1.19-alpine3.18 AS builder
 
 ENV RESTIC_VERSION 0.15.1
 ENV CGO_ENABLED 0
@@ -12,7 +12,7 @@ RUN cd /tmp \
     # flag -ldflags "-s -w" produces a smaller executable
     && go build -ldflags "-s -w" -v -o /tmp/restic ./cmd/restic
 
-FROM python:3.11-alpine3.17
+FROM python:3.11-alpine3.18
 
 RUN apk add --no-cache --update openssh tzdata