diff --git a/Dockerfile b/Dockerfile
index c345b7b..99fb573 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@
 # ============================================
 # Stage 1: Build - Install dependencies
 # ============================================
-FROM node:18-alpine AS builder
+FROM node:20-alpine AS builder
 
 # Add metadata
 LABEL maintainer="timetracker"
@@ -12,6 +12,9 @@ LABEL description="Time tracking application with persistent timer and German br
 
 WORKDIR /app
 
+# Install build dependencies for native modules (better-sqlite3)
+RUN apk add --no-cache python3 make g++
+
 # Copy package files for dependency installation
 COPY package*.json ./
 
@@ -22,7 +25,7 @@ RUN npm install --omit=dev && \
 # ============================================
 # Stage 2: Runtime - Slim production image
 # ============================================
-FROM node:18-alpine
+FROM node:20-alpine
 
 WORKDIR /app