diff --git a/loc-chase.html b/loc-chase.html
index 20419cf..43b8bfa 100644
--- a/loc-chase.html
+++ b/loc-chase.html
@@ -2,8 +2,14 @@
 <html lang="ja">
 <head>
 <title>GNSS宝探し</title>
-<link rel="stylesheet" type="text/css" href="../src/leaflet.css">
-<script type="text/javascript" src="../src/leaflet.js"></script>
+  <link
+    rel="stylesheet"
+    href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
+  >
+  <script
+    src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"
+    defer
+  ></script>
 <script type="text/javascript" src="loc-chase.js"></script>
 <style type="text/css">
 <!--
