diff --git a/index.html b/index.html
index 76dc4f8..70bbb26 100644
--- a/index.html
+++ b/index.html
@@ -9,11 +9,8 @@
         <meta name="description" content="Rail Map Toolkit" />
         <base href="./" />
         <link rel="apple-touch-icon" href="/logo192.png" />
-        <!--
-manifest.json provides metadata used when your web app is installed on a
-user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
--->
         <link rel="manifest" href="/manifest.json" />
+        <link rel="canonical" href="https://railmapgen.github.io" />
 
         <title>Rail Map Toolkit</title>
     </head>
diff --git a/package-lock.json b/package-lock.json
index 71d6543..e89b486 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
                 "@emotion/react": "^11.11.3",
                 "@emotion/styled": "^11.11.0",
                 "@railmapgen/rmg-components": "^10.0.6",
-                "@railmapgen/rmg-runtime": "^9.0.1",
+                "@railmapgen/rmg-runtime": "^9.0.2",
                 "@railmapgen/rmg-translate": "^3.1.2",
                 "@reduxjs/toolkit": "^2.1.0",
                 "framer-motion": "^11.0.3",
@@ -3669,9 +3669,9 @@
             }
         },
         "node_modules/@railmapgen/rmg-runtime": {
-            "version": "9.0.1",
-            "resolved": "https://registry.npmjs.org/@railmapgen/rmg-runtime/-/rmg-runtime-9.0.1.tgz",
-            "integrity": "sha512-m6CZynaAVe8SDnMCmFYwpYDNUcHMYxbfPmlHWm6U99g42P77gn6B50vGFyOZKC/NWUywPnjXsYQBzJBqnQnyUw==",
+            "version": "9.0.2",
+            "resolved": "https://registry.npmjs.org/@railmapgen/rmg-runtime/-/rmg-runtime-9.0.2.tgz",
+            "integrity": "sha512-n7nVmYNyLC8wIzsoQhi9QumnfpS/cdjHPhJj80sTaf0ywVf6m24N2DQdGnF6e1v9KK1zDS3gOod/qN46wOnvwA==",
             "dependencies": {
                 "i18next": "^23.7.16"
             }
@@ -12925,9 +12925,9 @@
             }
         },
         "@railmapgen/rmg-runtime": {
-            "version": "9.0.1",
-            "resolved": "https://registry.npmjs.org/@railmapgen/rmg-runtime/-/rmg-runtime-9.0.1.tgz",
-            "integrity": "sha512-m6CZynaAVe8SDnMCmFYwpYDNUcHMYxbfPmlHWm6U99g42P77gn6B50vGFyOZKC/NWUywPnjXsYQBzJBqnQnyUw==",
+            "version": "9.0.2",
+            "resolved": "https://registry.npmjs.org/@railmapgen/rmg-runtime/-/rmg-runtime-9.0.2.tgz",
+            "integrity": "sha512-n7nVmYNyLC8wIzsoQhi9QumnfpS/cdjHPhJj80sTaf0ywVf6m24N2DQdGnF6e1v9KK1zDS3gOod/qN46wOnvwA==",
             "requires": {
                 "i18next": "^23.7.16"
             }
diff --git a/package.json b/package.json
index f759a98..1f2d0fa 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
         "@emotion/react": "^11.11.3",
         "@emotion/styled": "^11.11.0",
         "@railmapgen/rmg-components": "^10.0.6",
-        "@railmapgen/rmg-runtime": "^9.0.1",
+        "@railmapgen/rmg-runtime": "^9.0.2",
         "@railmapgen/rmg-translate": "^3.1.2",
         "@reduxjs/toolkit": "^2.1.0",
         "framer-motion": "^11.0.3",
diff --git a/src/inject-seo.ts b/src/inject-seo.ts
index ba84ac5..70cf824 100644
--- a/src/inject-seo.ts
+++ b/src/inject-seo.ts
@@ -1,8 +1,6 @@
-const injectCanonicalLink = () => {
-    const link = document.createElement('link');
-    link.rel = 'canonical';
-    link.href = window.location.origin;
-    document.head.appendChild(link);
+const overrideCanonicalLink = () => {
+    const link = document.querySelector<HTMLLinkElement>('link[rel="canonical"]')!;
+    link.setAttribute('href', window.location.origin);
 };
 
-injectCanonicalLink();
+overrideCanonicalLink();