diff --git a/package.json b/package.json
index 2f66d8d..e5edb98 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
         ]
     },
     "dependencies": {
-        "itty-router": "3.0.11",
+        "itty-router": "4.0.21",
         "leetcode-query": "0.2.7",
         "nano-font": "0.3.1"
     },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f691080..19d9f78 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -2,8 +2,8 @@ lockfileVersion: '6.0'
 
 dependencies:
   itty-router:
-    specifier: 3.0.11
-    version: 3.0.11
+    specifier: 4.0.21
+    version: 4.0.21
   leetcode-query:
     specifier: 0.2.7
     version: 0.2.7
@@ -2954,8 +2954,8 @@ packages:
       istanbul-lib-report: 3.0.0
     dev: true
 
-  /itty-router@3.0.11:
-    resolution: {integrity: sha512-vWsoHBi2CmU15YzyUeHjRfjdySL2jqZQKA9jP1LXkBcLJAo0KQNVlQMvhtzG0mzABhVYifeBF97UkrrpuTCWYQ==}
+  /itty-router@4.0.21:
+    resolution: {integrity: sha512-lgK5eTxBDbPQ3xOI/Ix78x8jI6iU/B2eJadURUQ/9fqG8RIpXEKMNA5myCZaeVuMWxMjcDUDq+fCqQE5pcEw3Q==}
     dev: false
 
   /javascript-natural-sort@0.7.1: