diff --git a/docker/judgehost/Dockerfile b/docker/judgehost/Dockerfile
index d22f7cd2..9211496f 100644
--- a/docker/judgehost/Dockerfile
+++ b/docker/judgehost/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 LABEL org.opencontainers.image.authors="DOMjudge team <team@domjudge.org>"
 
 ENV DEBIAN_FRONTEND=noninteractive \
diff --git a/docker/judgehost/Dockerfile.build b/docker/judgehost/Dockerfile.build
index e984bc33..e95e0aa6 100644
--- a/docker/judgehost/Dockerfile.build
+++ b/docker/judgehost/Dockerfile.build
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 LABEL org.opencontainers.image.authors="DOMjudge team <team@domjudge.org>"
 
 ENV DEBIAN_FRONTEND=noninteractive
diff --git a/docker/judgehost/Dockerfile.chroot b/docker/judgehost/Dockerfile.chroot
index d533a5cc..4bd240d7 100644
--- a/docker/judgehost/Dockerfile.chroot
+++ b/docker/judgehost/Dockerfile.chroot
@@ -1,4 +1,4 @@
-FROM ubuntu:20.04
+FROM ubuntu:24.04
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt update && apt -y install \
   ca-certificates default-jre-headless pypy3 locales \