diff --git a/docker/Dockerfile b/docker/Dockerfile
index 52eab692..7d41ffb0 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,6 +1,6 @@
 # syntax = docker/dockerfile:1.14@sha256:4c68376a702446fc3c79af22de146a148bc3367e73c25a5803d453b6b3f722fb
 
-FROM docker.io/ruby:3.4.2-slim@sha256:98e208daf93d40485edf2f5e1a1527202ae0824cdc1619b6659674a84aa197ba AS build
+FROM docker.io/ruby:3.4.7-slim@sha256:70670212b86f1ce42e689b8859e84c5b373622544ac444ce94b8973cfc2310cf AS build
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 
@@ -62,7 +62,7 @@ EOF
 #
 # Runtime image
 #
-FROM docker.io/ruby:3.4.2-slim@sha256:98e208daf93d40485edf2f5e1a1527202ae0824cdc1619b6659674a84aa197ba
+FROM docker.io/ruby:3.4.7-slim@sha256:70670212b86f1ce42e689b8859e84c5b373622544ac444ce94b8973cfc2310cf
 
 ARG TARGETARCH