diff --git a/second-edition/book.toml b/second-edition/book.toml
index 9789a435c..a55720163 100644
--- a/second-edition/book.toml
+++ b/second-edition/book.toml
@@ -1,3 +1,6 @@
 [book]
 title = "The Rust Programming Language"
 author = "Steve Klabnik and Carol Nichols, with Contributions from the Rust Community"
+
+[output.html]
+additional-css = ["theme/notice.css"]
diff --git a/second-edition/theme/header.hbs b/second-edition/theme/header.hbs
new file mode 100644
index 000000000..1c65b8f86
--- /dev/null
+++ b/second-edition/theme/header.hbs
@@ -0,0 +1,5 @@
+<blockquote class="header-notice">
+  <p>
+    <strong>注意: <a href="https://doc.rust-jp.rs/book-ja/">最新版のドキュメントをご覧ください。</a></strong>この第2版ドキュメントは古くなっており、最新情報が反映されていません。リンク先のドキュメントが現在の Rust の最新のドキュメントです。
+  </p>
+</blockquote>
diff --git a/second-edition/theme/notice.css b/second-edition/theme/notice.css
new file mode 100644
index 000000000..44d791128
--- /dev/null
+++ b/second-edition/theme/notice.css
@@ -0,0 +1,29 @@
+.ayu .header-notice {
+    border-top: 1px solid #492b2d;
+    border-bottom: 1px solid #492b2d;
+    background-color: #492b2d;
+}
+
+.coal .header-notice {
+    border-top: 1px solid #552e28;
+    border-bottom: 1px solid #552e28;
+    background-color: #552e28;
+}
+
+.light .header-notice {
+    border-top: 1px solid #f0e1e1;
+    border-bottom: 1px solid #f0e1e1;
+    background-color: #f0e1e1;
+}
+
+.navy .header-notice {
+    border-top: 1px solid #492b2d;
+    border-bottom: 1px solid #492b2d;
+    background-color: #492b2d;
+}
+
+.rust .header-notice {
+    border-top: 1px solid #b9897f;
+    border-bottom: 1px solid #b9897f;
+    background-color: #b9897f;
+}