diff --git a/book.json b/book.json
index 9f4fbf7..e31a1dd 100644
--- a/book.json
+++ b/book.json
@@ -2,7 +2,7 @@
     "title": "Docker -- 从入门到实践",
     "author": "yeasy",
     "plugins": [
-        "autocover",
+        "-autocover",
         "image-captions",
         "github-buttons",
         "latex-codecogs",
diff --git a/cover.jpg b/cover.jpg
index c2121d3..ad6fa32 100644
Binary files a/cover.jpg and b/cover.jpg differ
diff --git a/cover.sketch b/cover.sketch
new file mode 100644
index 0000000..623f3db
Binary files /dev/null and b/cover.sketch differ