diff --git a/metadata.yaml b/metadata.yaml
index e1a75c7..19bc80f 100644
--- a/metadata.yaml
+++ b/metadata.yaml
@@ -3,3 +3,4 @@ title: 设计数据密集型应用
 author: Martin Kleppmann
 rights:  Creative Commons Non-Commercial Share Alike 3.0
 language: 中文
+cover-image: ./static/title.jpg