diff --git a/package-lock.json b/package-lock.json
index 5f195f6..a59282e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "remark-rehype": "^11.1.1",
         "remark-stringify": "^11.0.0",
         "semver": "^7.6.3",
-        "shiki": "^1.18.0",
+        "shiki": "^1.21.0",
         "unified": "^11.0.5",
         "unist-builder": "^4.0.0",
         "unist-util-find-after": "^5.0.0",
@@ -343,41 +343,41 @@
       }
     },
     "node_modules/@shikijs/core": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/@shikijs/core/-/core-1.18.0.tgz",
-      "integrity": "sha512-VK4BNVCd2leY62Nm2JjyxtRLkyrZT/tv104O81eyaCjHq4Adceq2uJVFJJAIof6lT1mBwZrEo2qT/T+grv3MQQ==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/@shikijs/core/-/core-1.21.0.tgz",
+      "integrity": "sha512-zAPMJdiGuqXpZQ+pWNezQAk5xhzRXBNiECFPcJLtUdsFM3f//G95Z15EHTnHchYycU8kIIysqGgxp8OVSj1SPQ==",
       "dependencies": {
-        "@shikijs/engine-javascript": "1.18.0",
-        "@shikijs/engine-oniguruma": "1.18.0",
-        "@shikijs/types": "1.18.0",
+        "@shikijs/engine-javascript": "1.21.0",
+        "@shikijs/engine-oniguruma": "1.21.0",
+        "@shikijs/types": "1.21.0",
         "@shikijs/vscode-textmate": "^9.2.2",
         "@types/hast": "^3.0.4",
         "hast-util-to-html": "^9.0.3"
       }
     },
     "node_modules/@shikijs/engine-javascript": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/@shikijs/engine-javascript/-/engine-javascript-1.18.0.tgz",
-      "integrity": "sha512-qoP/aO/ATNwYAUw1YMdaip/YVEstMZEgrwhePm83Ll9OeQPuxDZd48szZR8oSQNQBT8m8UlWxZv8EA3lFuyI5A==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/@shikijs/engine-javascript/-/engine-javascript-1.21.0.tgz",
+      "integrity": "sha512-jxQHNtVP17edFW4/0vICqAVLDAxmyV31MQJL4U/Kg+heQALeKYVOWo0sMmEZ18FqBt+9UCdyqGKYE7bLRtk9mg==",
       "dependencies": {
-        "@shikijs/types": "1.18.0",
+        "@shikijs/types": "1.21.0",
         "@shikijs/vscode-textmate": "^9.2.2",
         "oniguruma-to-js": "0.4.3"
       }
     },
     "node_modules/@shikijs/engine-oniguruma": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/@shikijs/engine-oniguruma/-/engine-oniguruma-1.18.0.tgz",
-      "integrity": "sha512-B9u0ZKI/cud+TcmF8Chyh+R4V5qQVvyDOqXC2l2a4x73PBSBc6sZ0JRAX3eqyJswqir6ktwApUUGBYePdKnMJg==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/@shikijs/engine-oniguruma/-/engine-oniguruma-1.21.0.tgz",
+      "integrity": "sha512-AIZ76XocENCrtYzVU7S4GY/HL+tgHGbVU+qhiDyNw1qgCA5OSi4B4+HY4BtAoJSMGuD/L5hfTzoRVbzEm2WTvg==",
       "dependencies": {
-        "@shikijs/types": "1.18.0",
+        "@shikijs/types": "1.21.0",
         "@shikijs/vscode-textmate": "^9.2.2"
       }
     },
     "node_modules/@shikijs/types": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/@shikijs/types/-/types-1.18.0.tgz",
-      "integrity": "sha512-O9N36UEaGGrxv1yUrN2nye7gDLG5Uq0/c1LyfmxsvzNPqlHzWo9DI0A4+fhW2y3bGKuQu/fwS7EPdKJJCowcVA==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/@shikijs/types/-/types-1.21.0.tgz",
+      "integrity": "sha512-tzndANDhi5DUndBtpojEq/42+dpUF2wS7wdCDQaFtIXm3Rd1QkrcVgSSRLOvEwexekihOXfbYJINW37g96tJRw==",
       "dependencies": {
         "@shikijs/vscode-textmate": "^9.2.2",
         "@types/hast": "^3.0.4"
@@ -3463,14 +3463,14 @@
       }
     },
     "node_modules/shiki": {
-      "version": "1.18.0",
-      "resolved": "https://registry.npmjs.org/shiki/-/shiki-1.18.0.tgz",
-      "integrity": "sha512-8jo7tOXr96h9PBQmOHVrltnETn1honZZY76YA79MHheGQg55jBvbm9dtU+MI5pjC5NJCFuA6rvVTLVeSW5cE4A==",
-      "dependencies": {
-        "@shikijs/core": "1.18.0",
-        "@shikijs/engine-javascript": "1.18.0",
-        "@shikijs/engine-oniguruma": "1.18.0",
-        "@shikijs/types": "1.18.0",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/shiki/-/shiki-1.21.0.tgz",
+      "integrity": "sha512-apCH5BoWTrmHDPGgg3RF8+HAAbEL/CdbYr8rMw7eIrdhCkZHdVGat5mMNlRtd1erNG01VPMIKHNQ0Pj2HMAiog==",
+      "dependencies": {
+        "@shikijs/core": "1.21.0",
+        "@shikijs/engine-javascript": "1.21.0",
+        "@shikijs/engine-oniguruma": "1.21.0",
+        "@shikijs/types": "1.21.0",
         "@shikijs/vscode-textmate": "^9.2.2",
         "@types/hast": "^3.0.4"
       }
diff --git a/package.json b/package.json
index 0bb81bb..35ca33c 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "remark-rehype": "^11.1.1",
     "remark-stringify": "^11.0.0",
     "semver": "^7.6.3",
-    "shiki": "^1.18.0",
+    "shiki": "^1.21.0",
     "unified": "^11.0.5",
     "unist-builder": "^4.0.0",
     "unist-util-find-after": "^5.0.0",