diff --git a/docker-compose.yml b/docker-compose.yml
index 8be6100..a550d37 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -3,8 +3,9 @@ services:
     build: .
     expose:
       - 3001
+    env_file:
+      - .env
     environment:
-      - DEEPSEEK_API_KEY=${DEEPSEEK_API_KEY}
       - TEACHING_BOOKS_DB=/app/data/teaching-books.db
     volumes:
       - db_data:/app/data