diff --git a/backend/Dockerfile b/backend/Dockerfile
index f88b0f9..670e8a6 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -8,7 +8,7 @@ RUN apk add --no-cache python3 make g++
 
 # Copy package files
 COPY package*.json ./
-RUN npm ci --only=production
+RUN npm ci
 
 # Copy source code
 COPY src/ ./src/
@@ -17,6 +17,9 @@ COPY tsconfig.json ./
 # Build TypeScript
 RUN npm run build
 
+# Remove dev dependencies for slimmer runtime image
+RUN npm prune --omit=dev
+
 # Create data directory
 RUN mkdir -p /data && chown -R node:node /data
 
@@ -31,4 +34,4 @@ HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
   CMD node -e "require('http').get('http://localhost:8080/health', (res) => process.exit(res.statusCode === 200 ? 0 : 1)).on('error', () => process.exit(1))"
 
 # Start server
-CMD ["npm", "start"]
\ No newline at end of file
+CMD ["npm", "start"]