diff --git a/package.json b/package.json
index 93d26e7..b924c55 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "lint-staged": "^16.2.7",
     "postcss": "^8.5.6",
     "remark-gfm": "^4.0.1",
-    "shiki": "^3.22.0",
+    "shiki": "^4.0.0",
     "tailwindcss": "^4.1.18",
     "typescript": "^5.9.3",
     "ultracite": "^7.1.5"
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a99ae42..54a21bc 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -70,8 +70,8 @@ importers:
         specifier: ^4.0.1
         version: 4.0.1
       shiki:
-        specifier: ^3.22.0
-        version: 3.22.0
+        specifier: ^4.0.0
+        version: 4.0.2
       tailwindcss:
         specifier: ^4.1.18
         version: 4.1.18
@@ -558,23 +558,33 @@ packages:
       '@types/react':
         optional: true
 
-  '@shikijs/core@3.22.0':
-    resolution: {integrity: sha512-iAlTtSDDbJiRpvgL5ugKEATDtHdUVkqgHDm/gbD2ZS9c88mx7G1zSYjjOxp5Qa0eaW0MAQosFRmJSk354PRoQA==}
+  '@shikijs/core@4.0.2':
+    resolution: {integrity: sha512-hxT0YF4ExEqB8G/qFdtJvpmHXBYJ2lWW7qTHDarVkIudPFE6iCIrqdgWxGn5s+ppkGXI0aEGlibI0PAyzP3zlw==}
+    engines: {node: '>=20'}
 
-  '@shikijs/engine-javascript@3.22.0':
-    resolution: {integrity: sha512-jdKhfgW9CRtj3Tor0L7+yPwdG3CgP7W+ZEqSsojrMzCjD1e0IxIbwUMDDpYlVBlC08TACg4puwFGkZfLS+56Tw==}
+  '@shikijs/engine-javascript@4.0.2':
+    resolution: {integrity: sha512-7PW0Nm49DcoUIQEXlJhNNBHyoGMjalRETTCcjMqEaMoJRLljy1Bi/EGV3/qLBgLKQejdspiiYuHGQW6dX94Nag==}
+    engines: {node: '>=20'}
 
-  '@shikijs/engine-oniguruma@3.22.0':
-    resolution: {integrity: sha512-DyXsOG0vGtNtl7ygvabHd7Mt5EY8gCNqR9Y7Lpbbd/PbJvgWrqaKzH1JW6H6qFkuUa8aCxoiYVv8/YfFljiQxA==}
+  '@shikijs/engine-oniguruma@4.0.2':
+    resolution: {integrity: sha512-UpCB9Y2sUKlS9z8juFSKz7ZtysmeXCgnRF0dlhXBkmQnek7lAToPte8DkxmEYGNTMii72zU/lyXiCB6StuZeJg==}
+    engines: {node: '>=20'}
 
-  '@shikijs/langs@3.22.0':
-    resolution: {integrity: sha512-x/42TfhWmp6H00T6uwVrdTJGKgNdFbrEdhaDwSR5fd5zhQ1Q46bHq9EO61SCEWJR0HY7z2HNDMaBZp8JRmKiIA==}
+  '@shikijs/langs@4.0.2':
+    resolution: {integrity: sha512-KaXby5dvoeuZzN0rYQiPMjFoUrz4hgwIE+D6Du9owcHcl6/g16/yT5BQxSW5cGt2MZBz6Hl0YuRqf12omRfUUg==}
+    engines: {node: '>=20'}
 
-  '@shikijs/themes@3.22.0':
-    resolution: {integrity: sha512-o+tlOKqsr6FE4+mYJG08tfCFDS+3CG20HbldXeVoyP+cYSUxDhrFf3GPjE60U55iOkkjbpY2uC3It/eeja35/g==}
+  '@shikijs/primitive@4.0.2':
+    resolution: {integrity: sha512-M6UMPrSa3fN5ayeJwFVl9qWofl273wtK1VG8ySDZ1mQBfhCpdd8nEx7nPZ/tk7k+TYcpqBZzj/AnwxT9lO+HJw==}
+    engines: {node: '>=20'}
 
-  '@shikijs/types@3.22.0':
-    resolution: {integrity: sha512-491iAekgKDBFE67z70Ok5a8KBMsQ2IJwOWw3us/7ffQkIBCyOQfm/aNwVMBUriP02QshIfgHCBSIYAl3u2eWjg==}
+  '@shikijs/themes@4.0.2':
+    resolution: {integrity: sha512-mjCafwt8lJJaVSsQvNVrJumbnnj1RI8jbUKrPKgE6E3OvQKxnuRoBaYC51H4IGHePsGN/QtALglWBU7DoKDFnA==}
+    engines: {node: '>=20'}
+
+  '@shikijs/types@4.0.2':
+    resolution: {integrity: sha512-qzbeRooUTPnLE+sHD/Z8DStmaDgnbbc/pMrU203950aRqjX/6AFHeDYT+j00y2lPdz0ywJKx7o/7qnqTivtlXg==}
+    engines: {node: '>=20'}
 
   '@shikijs/vscode-textmate@10.0.2':
     resolution: {integrity: sha512-83yeghZ2xxin3Nj8z1NMd/NCuca+gsYXswywDy5bHvwlWL8tpTQmzGeUuHd9FC3E/SBEMvzJRwWEOz5gGes9Qg==}
@@ -1376,8 +1386,9 @@ packages:
     resolution: {integrity: sha512-Ou9I5Ft9WNcCbXrU9cMgPBcCK8LiwLqcbywW3t4oDV37n1pzpuNLsYiAV8eODnjbtQlSDwZ2cUEeQz4E54Hltg==}
     engines: {node: ^18.17.0 || ^20.3.0 || >=21.0.0}
 
-  shiki@3.22.0:
-    resolution: {integrity: sha512-LBnhsoYEe0Eou4e1VgJACes+O6S6QC0w71fCSp5Oya79inkwkm15gQ1UF6VtQ8j/taMDh79hAB49WUk8ALQW3g==}
+  shiki@4.0.2:
+    resolution: {integrity: sha512-eAVKTMedR5ckPo4xne/PjYQYrU3qx78gtJZ+sHlXEg5IHhhoQhMfZVzetTYuaJS0L2Ef3AcCRzCHV8T0WI6nIQ==}
+    engines: {node: '>=20'}
 
   signal-exit@4.1.0:
     resolution: {integrity: sha512-bzyZ1e88w9O1iNJbKnOlvYTrWPDl46O1bG0D3XInv+9tkPrxrN8jUUTiFlDkkmKWgn1M6CfIA13SuGqOa9Korw==}
@@ -1897,33 +1908,40 @@ snapshots:
     optionalDependencies:
       '@types/react': 19.2.14
 
-  '@shikijs/core@3.22.0':
+  '@shikijs/core@4.0.2':
     dependencies:
-      '@shikijs/types': 3.22.0
+      '@shikijs/primitive': 4.0.2
+      '@shikijs/types': 4.0.2
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
       hast-util-to-html: 9.0.5
 
-  '@shikijs/engine-javascript@3.22.0':
+  '@shikijs/engine-javascript@4.0.2':
     dependencies:
-      '@shikijs/types': 3.22.0
+      '@shikijs/types': 4.0.2
       '@shikijs/vscode-textmate': 10.0.2
       oniguruma-to-es: 4.3.4
 
-  '@shikijs/engine-oniguruma@3.22.0':
+  '@shikijs/engine-oniguruma@4.0.2':
     dependencies:
-      '@shikijs/types': 3.22.0
+      '@shikijs/types': 4.0.2
       '@shikijs/vscode-textmate': 10.0.2
 
-  '@shikijs/langs@3.22.0':
+  '@shikijs/langs@4.0.2':
+    dependencies:
+      '@shikijs/types': 4.0.2
+
+  '@shikijs/primitive@4.0.2':
     dependencies:
-      '@shikijs/types': 3.22.0
+      '@shikijs/types': 4.0.2
+      '@shikijs/vscode-textmate': 10.0.2
+      '@types/hast': 3.0.4
 
-  '@shikijs/themes@3.22.0':
+  '@shikijs/themes@4.0.2':
     dependencies:
-      '@shikijs/types': 3.22.0
+      '@shikijs/types': 4.0.2
 
-  '@shikijs/types@3.22.0':
+  '@shikijs/types@4.0.2':
     dependencies:
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4
@@ -3044,14 +3062,14 @@ snapshots:
       '@img/sharp-win32-x64': 0.34.5
     optional: true
 
-  shiki@3.22.0:
+  shiki@4.0.2:
     dependencies:
-      '@shikijs/core': 3.22.0
-      '@shikijs/engine-javascript': 3.22.0
-      '@shikijs/engine-oniguruma': 3.22.0
-      '@shikijs/langs': 3.22.0
-      '@shikijs/themes': 3.22.0
-      '@shikijs/types': 3.22.0
+      '@shikijs/core': 4.0.2
+      '@shikijs/engine-javascript': 4.0.2
+      '@shikijs/engine-oniguruma': 4.0.2
+      '@shikijs/langs': 4.0.2
+      '@shikijs/themes': 4.0.2
+      '@shikijs/types': 4.0.2
       '@shikijs/vscode-textmate': 10.0.2
       '@types/hast': 3.0.4