diff --git a/docker/adminrpc.Dockerfile b/docker/adminrpc.Dockerfile
index 3e0525d..567b0fe 100644
--- a/docker/adminrpc.Dockerfile
+++ b/docker/adminrpc.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates libssl3 \
diff --git a/docker/app.Dockerfile b/docker/app.Dockerfile
index 9d3f87a..cbaa31f 100644
--- a/docker/app.Dockerfile
+++ b/docker/app.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates libssl3 git \
diff --git a/docker/email-worker.Dockerfile b/docker/email-worker.Dockerfile
index b9d2bbc..661d07c 100644
--- a/docker/email-worker.Dockerfile
+++ b/docker/email-worker.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates libssl3 procps \
diff --git a/docker/git-hook.Dockerfile b/docker/git-hook.Dockerfile
index c6e1448..c4d1aa8 100644
--- a/docker/git-hook.Dockerfile
+++ b/docker/git-hook.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates libssl3 openssh-client procps git \
diff --git a/docker/gitserver.Dockerfile b/docker/gitserver.Dockerfile
index fcd32e7..9af7488 100644
--- a/docker/gitserver.Dockerfile
+++ b/docker/gitserver.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates libssl3 openssh-server git \
diff --git a/docker/operator.Dockerfile b/docker/operator.Dockerfile
index 49f3e03..3841a22 100644
--- a/docker/operator.Dockerfile
+++ b/docker/operator.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates git \
diff --git a/docker/static.Dockerfile b/docker/static.Dockerfile
index 37840db..a7ff298 100644
--- a/docker/static.Dockerfile
+++ b/docker/static.Dockerfile
@@ -1,5 +1,5 @@
 # Runtime only — binary built externally via cargo
-FROM debian:bookworm-slim
+FROM ubuntu:24.04
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates git \