diff --git a/package.json b/package.json
index 5a994ea..999f4cc 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "reading-time": "^1.5.0",
     "sharp": "^0.34.5",
     "sharp-ico": "^0.1.5",
-    "shiki": "^3.23.0",
+    "shiki": "^4.0.0",
     "tailwindcss": "^4.2.1",
     "ultrahtml": "^1.6.0"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index aa76369..b5a870a 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -70,7 +70,7 @@ importers:
         version: 17.0.3
       marked-shiki:
         specifier: ^1.2.1
-        version: 1.2.1(marked@17.0.3)(shiki@3.23.0)
+        version: 1.2.1(marked@17.0.3)(shiki@4.0.0)
       mdast-util-to-string:
         specifier: ^4.0.0
         version: 4.0.0
@@ -93,8 +93,8 @@ importers:
         specifier: ^0.1.5
         version: 0.1.5
       shiki:
-        specifier: ^3.23.0
-        version: 3.23.0
+        specifier: ^4.0.0
+        version: 4.0.0
       tailwindcss:
         specifier: ^4.2.1
         version: 4.2.1
@@ -1801,21 +1801,49 @@ packages:
   '@shikijs/core@3.23.0':
     resolution: {integrity: sha512-NSWQz0riNb67xthdm5br6lAkvpDJRTgB36fxlo37ZzM2yq0PQFFzbd8psqC2XMPgCzo1fW6cVi18+ArJ44wqgA==}
 
+  '@shikijs/core@4.0.0':
+    resolution: {integrity: sha512-tvV94Dwyz4qFZ8R0MUaFx5Yptgy8yrloa4dwynEJDGjKz+8vqO8Q6FmPZL9W1gSzFHOUMOGQzIHK62aGourFxA==}
+    engines: {node: '>=20'}
+
   '@shikijs/engine-javascript@3.23.0':
     resolution: {integrity: sha512-aHt9eiGFobmWR5uqJUViySI1bHMqrAgamWE1TYSUoftkAeCCAiGawPMwM+VCadylQtF4V3VNOZ5LmfItH5f3yA==}
 
+  '@shikijs/engine-javascript@4.0.0':
+    resolution: {integrity: sha512-+PEyTS+JTz2lLy2C1Dwwx6hzoehIzqxQYh5MEjv9V4JtSabx+bIkRHfQT+6DnBmPAplGH0exBknWeiJSXC7w1w==}
+    engines: {node: '>=20'}
+
   '@shikijs/engine-oniguruma@3.23.0':
     resolution: {integrity: sha512-1nWINwKXxKKLqPibT5f4pAFLej9oZzQTsby8942OTlsJzOBZ0MWKiwzMsd+jhzu8YPCHAswGnnN1YtQfirL35g==}
 
+  '@shikijs/engine-oniguruma@4.0.0':
+    resolution: {integrity: sha512-KXmq4b6Xw16+4+rz5M4NZMoe/tzs5kTOMSJz8+LCyxSrwmxwTBAM/ab85iSO2Gw79E47HkW4B9HPHUXhrNOivw==}
+    engines: {node: '>=20'}
+
   '@shikijs/langs@3.23.0':
     resolution: {integrity: sha512-2Ep4W3Re5aB1/62RSYQInK9mM3HsLeB91cHqznAJMuylqjzNVAVCMnNWRHFtcNHXsoNRayP9z1qj4Sq3nMqYXg==}
 
+  '@shikijs/langs@4.0.0':
+    resolution: {integrity: sha512-dSAT6fBcnOcYZQMWZO8+OmzUKKm+OO0As/qZ3TXLiSy0JsCTEYz1TaX7TDupnYLz7dr0oF2DOTEgPocx1D3aFw==}
+    engines: {node: '>=20'}
+
+  '@shikijs/primitive@4.0.0':
+    resolution: {integrity: sha512-6K2zD7JTgsyFc2vM1rqy8eRGC8D5Hius3qzVONjq2lHMrqfTSn1HcGeJZiFPYSV9m3DQuBHncBbA5xe0hKSOkQ==}
+    engines: {node: '>=20'}
+
   '@shikijs/themes@3.23.0':
     resolution: {integrity: sha512-5qySYa1ZgAT18HR/ypENL9cUSGOeI2x+4IvYJu4JgVJdizn6kG4ia5Q1jDEOi7gTbN4RbuYtmHh0W3eccOrjMA==}
 
+  '@shikijs/themes@4.0.0':
+    resolution: {integrity: sha512-xe42kvxOXan5ouXxULez6qwDNUJkoP6kicfg0wKuJBkeIaHLxZBZa2gEGYutL1q27DQZ5+XoR6caVX+E/aNR5A==}
+    engines: {node: '>=20'}
+
   '@shikijs/types@3.23.0':
     resolution: {integrity: sha512-3JZ5HXOZfYjsYSk0yPwBrkupyYSLpAE26Qc0HLghhZNGTZg/SKxXIIgoxOpmmeQP0RRSDJTk1/vPfw9tbw+jSQ==}
 
+  '@shikijs/types@4.0.0':
+    resolution: {integrity: sha512-LCnfBTtQKNtJyc1qMShZr2dJt1uxNI6pI0/YTc2DSNET91aUvnMGHUHsucVCC5AJVcv5XyBqk2NgYRwd20EjbA==}
+    engines: {node: '>=20'}
+
   '@shikijs/vscode-textmate@10.0.2':
     resolution: {integrity: sha512-83yeghZ2xxin3Nj8z1NMd/NCuca+gsYXswywDy5bHvwlWL8tpTQmzGeUuHd9FC3E/SBEMvzJRwWEOz5gGes9Qg==}
 
@@ -5121,6 +5149,10 @@ packages:
   shiki@3.23.0:
     resolution: {integrity: sha512-55Dj73uq9ZXL5zyeRPzHQsK7Nbyt6Y10k5s7OjuFZGMhpp4r/rsLBH0o/0fstIzX1Lep9VxefWljK/SKCzygIA==}
 
+  shiki@4.0.0:
+    resolution: {integrity: sha512-rjKoiw30ZaFsM0xnPPwxco/Jftz/XXqZkcQZBTX4LGheDw8gCDEH87jdgaKDEG3FZO2bFOK27+sR/sDHhbBXfg==}
+    engines: {node: '>=20'}
+
   side-channel-list@1.0.0:
     resolution: {integrity: sha512-FCLHtRD/gnpCiCHEiJLOwdmFP+wzCmDEkc9y7NsYxeF4u7Btsn1ZuwgwJGxImImHicJArLP4R0yX4c2KCrMrTA==}
     engines: {node: '>= 0.4'}
@@ -7537,30 +7569,68 @@ snapshots:
       '@types/hast': 3.0.4
       hast-util-to-html: 9.0.5
 
+  '@shikijs/core@4.0.0':
+    dependencies:
+      '@shikijs/primitive': 4.0.0
+      '@shikijs/types': 4.0.0
+      '@shikijs/vscode-textmate': 10.0.2
+      '@types/hast': 3.0.4
+      hast-util-to-html: 9.0.5
+
   '@shikijs/engine-javascript@3.23.0':
     dependencies:
       '@shikijs/types': 3.23.0
       '@shikijs/vscode-textmate': 10.0.2
       oniguruma-to-es: 4.3.4
 
+  '@shikijs/engine-javascript@4.0.0':
+    dependencies:
+      '@shikijs/types': 4.0.0
+      '@shikijs/vscode-textmate': 10.0.2
+      oniguruma-to-es: 4.3.4
+
   '@shikijs/engine-oniguruma@3.23.0':
     dependencies:
       '@shikijs/types': 3.23.0
       '@shikijs/vscode-textmate': 10.0.2
 
+  '@shikijs/engine-oniguruma@4.0.0':
+    dependencies:
+      '@shikijs/types': 4.0.0
+      '@shikijs/vscode-textmate': 10.0.2
+
   '@shikijs/langs@3.23.0':
     dependencies:
       '@shikijs/types': 3.23.0
 
+  '@shikijs/langs@4.0.0':
+    dependencies:
+      '@shikijs/types': 4.0.0
+
+  '@shikijs/primitive@4.0.0':
+    dependencies:
+      '@shikijs/types': 4.0.0
+      '@shikijs/vscode-textmate': 10.0.2
+      '@types/hast': 3.0.4
+
   '@shikijs/themes@3.23.0':
     dependencies:
       '@shikijs/types': 3.23.0
 
+  '@shikijs/themes@4.0.0':
+    dependencies:
+      '@shikijs/types': 4.0.0
+
   '@shikijs/types@3.23.0':
     dependencies:
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
 
+  '@shikijs/types@4.0.0':
+    dependencies:
+      '@shikijs/vscode-textmate': 10.0.2
+      '@types/hast': 3.0.4
+
   '@shikijs/vscode-textmate@10.0.2': {}
 
   '@surma/rollup-plugin-off-main-thread@2.2.3':
@@ -10317,10 +10387,10 @@ snapshots:
 
   markdown-table@3.0.4: {}
 
-  marked-shiki@1.2.1(marked@17.0.3)(shiki@3.23.0):
+  marked-shiki@1.2.1(marked@17.0.3)(shiki@4.0.0):
     dependencies:
       marked: 17.0.3
-      shiki: 3.23.0
+      shiki: 4.0.0
 
   marked@17.0.3: {}
 
@@ -11762,6 +11832,17 @@ snapshots:
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
 
+  shiki@4.0.0:
+    dependencies:
+      '@shikijs/core': 4.0.0
+      '@shikijs/engine-javascript': 4.0.0
+      '@shikijs/engine-oniguruma': 4.0.0
+      '@shikijs/langs': 4.0.0
+      '@shikijs/themes': 4.0.0
+      '@shikijs/types': 4.0.0
+      '@shikijs/vscode-textmate': 10.0.2
+      '@types/hast': 3.0.4
+
   side-channel-list@1.0.0:
     dependencies:
       es-errors: 1.3.0