diff --git a/book.json b/book.json
index 8a094f7..30b7a23 100644
--- a/book.json
+++ b/book.json
@@ -48,7 +48,7 @@
                     "name": "学习 Rust 编程语言 · ⚙️"
                 },
                 {
-                    "url": "https://java.xfoss.com",
+                    "url": "https://java-lang.xfoss.com",
                     "target": "_blank",
                     "name": "学习 Java 编程语言 · ☕"
                 }