diff --git a/Dockerfile b/Dockerfile
index 8c6c4af..65a69c2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-FROM docker.io/library/python:3.11-alpine AS cabuilder
-RUN apk add --no-cache ca-certificates py3-requests
+FROM docker.io/library/alpine:v3:23 AS cabuilder
+RUN apk add --no-cache ca-certificates py3 py3-requests
 ADD bin/fetch_letsencrypt_ca_certs.py /usr/local/bin/fetch_letsencrypt_ca_certs.py
 RUN /usr/local/bin/fetch_letsencrypt_ca_certs.py /usr/local/share/ca-certificates/
 RUN update-ca-certificates