diff --git a/Dockerfile.backend b/Dockerfile.backend
index ae1861d..bd9802b 100644
--- a/Dockerfile.backend
+++ b/Dockerfile.backend
@@ -1,4 +1,4 @@
-FROM registry.bstein.dev/bstein/python:3.12-slim
+FROM registry.bstein.dev/bstein/python:3.12-slim-arm64
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1
diff --git a/Dockerfile.frontend b/Dockerfile.frontend
index a2610e7..77c0a6e 100644
--- a/Dockerfile.frontend
+++ b/Dockerfile.frontend
@@ -1,5 +1,5 @@
 # Build stage
-FROM node:20-alpine AS build
+FROM registry.bstein.dev/bstein/node:20-alpine-arm64 AS build
 WORKDIR /app
 
 COPY frontend/package*.json ./
@@ -10,7 +10,7 @@ COPY media/ ./public/media/
 RUN npm run build
 
 # Runtime stage
-FROM nginx:1.27-alpine
+FROM registry.bstein.dev/bstein/nginx:1.27-alpine-arm64
 WORKDIR /usr/share/nginx/html
 
 # Minimal nginx config with SPA fallback.