diff --git a/package.json b/package.json
index 7d79100e1..2f23865a0 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "remark-parse": "^11.0.0",
     "remark-stringify": "^11.0.0",
     "sass": "^1.88.0",
-    "sitemap": "^8.0.0",
+    "sitemap": "^9.0.0",
     "stream": "^0.0.3",
     "strip-markdown": "^6.0.0",
     "tailwind-merge": "^3.3.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 90ecd4bb3..ffef521a9 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -96,8 +96,8 @@ importers:
         specifier: ^1.88.0
         version: 1.94.2
       sitemap:
-        specifier: ^8.0.0
-        version: 8.0.2
+        specifier: ^9.0.0
+        version: 9.0.0
       stream:
         specifier: ^0.0.3
         version: 0.0.3
@@ -2726,9 +2726,6 @@ packages:
   '@types/ms@2.1.0':
     resolution: {integrity: sha512-GsCCIZDE/p3i96vtEqx+7dBUGXrc7zeSK3wwPHIaRThS+9OhWIXRqzs4d6k1SVU8g91DrNRWxWUGhp5KXQb2VA==}
 
-  '@types/node@17.0.45':
-    resolution: {integrity: sha512-w+tIMs3rq2afQdsPJlODhoUEKzFP1ayaoyl1CcnwtIlsVe7K7bA1NGm4s3PraqTLlXnbIN84zuBlxBWo1u9BLw==}
-
   '@types/node@24.10.1':
     resolution: {integrity: sha512-GNWcUTRBgIRJD5zj+Tq0fKOJ5XZajIiBroOF0yvj2bSU1WvNdYS/dn9UxwsujGW4JX06dnHyjV2y9rRaybH0iQ==}
 
@@ -6013,6 +6010,7 @@ packages:
   next@15.5.6:
     resolution: {integrity: sha512-zTxsnI3LQo3c9HSdSf91O1jMNsEzIXDShXd4wVdg9y5shwLqBXi4ZtUUJyB86KGVSJLZx0PFONvO54aheGX8QQ==}
     engines: {node: ^18.18.0 || ^19.8.0 || >= 20.0.0}
+    deprecated: This version has a security vulnerability. Please upgrade to a patched version. See https://nextjs.org/blog/CVE-2025-66478 for more details.
     hasBin: true
     peerDependencies:
       '@opentelemetry/api': ^1.1.0
@@ -6949,9 +6947,9 @@ packages:
   sisteransi@1.0.5:
     resolution: {integrity: sha512-bLGGlR1QxBcynn2d5YmDX4MGjlZvy2MRBDRNHLJ8VI6l6+9FUiyTFNJ0IveOSP0bcXgVDPRcfGqA0pjaqUpfVg==}
 
-  sitemap@8.0.2:
-    resolution: {integrity: sha512-LwktpJcyZDoa0IL6KT++lQ53pbSrx2c9ge41/SeLTyqy2XUNA6uR4+P9u5IVo5lPeL2arAcOKn1aZAxoYbCKlQ==}
-    engines: {node: '>=14.0.0', npm: '>=6.0.0'}
+  sitemap@9.0.0:
+    resolution: {integrity: sha512-J/SU27FJ+I52TcDLKZzPRRVQUMj0Pp1i/HLb2lrkU+hrMLM+qdeRjdacrNxnSW48Waa3UcEOGOdX1+0Lob7TgA==}
+    engines: {node: '>=20.19.5', npm: '>=10.8.2'}
     hasBin: true
 
   slash@3.0.0:
@@ -10682,8 +10680,6 @@ snapshots:
 
   '@types/ms@2.1.0': {}
 
-  '@types/node@17.0.45': {}
-
   '@types/node@24.10.1':
     dependencies:
       undici-types: 7.16.0
@@ -16029,9 +16025,9 @@ snapshots:
 
   sisteransi@1.0.5: {}
 
-  sitemap@8.0.2:
+  sitemap@9.0.0:
     dependencies:
-      '@types/node': 17.0.45
+      '@types/node': 24.10.1
       '@types/sax': 1.2.7
       arg: 5.0.2
       sax: 1.4.3