diff --git a/package-lock.json b/package-lock.json
index ae51346..777b994 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -57,7 +57,7 @@
         "rfdc": "^1.4.1",
         "rimraf": "^6.0.1",
         "serve-handler": "^6.1.5",
-        "shiki": "^1.17.7",
+        "shiki": "^1.21.0",
         "source-map-support": "^0.5.21",
         "to-vfile": "^8.0.0",
         "toml": "^3.0.0",
@@ -892,41 +892,41 @@
       }
     },
     "node_modules/@shikijs/core": {
-      "version": "1.17.7",
-      "resolved": "https://registry.npmjs.org/@shikijs/core/-/core-1.17.7.tgz",
-      "integrity": "sha512-ZnIDxFu/yvje3Q8owSHaEHd+bu/jdWhHAaJ17ggjXofHx5rc4bhpCSW+OjC6smUBi5s5dd023jWtZ1gzMu/yrw==",
+      "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": "1.17.7",
-        "@shikijs/engine-oniguruma": "1.17.7",
-        "@shikijs/types": "1.17.7",
+        "@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": "^9.0.2"
+        "hast-util-to-html": "^9.0.3"
       }
     },
     "node_modules/@shikijs/engine-javascript": {
-      "version": "1.17.7",
-      "resolved": "https://registry.npmjs.org/@shikijs/engine-javascript/-/engine-javascript-1.17.7.tgz",
-      "integrity": "sha512-wwSf7lKPsm+hiYQdX+1WfOXujtnUG6fnN4rCmExxa4vo+OTmvZ9B1eKauilvol/LHUPrQgW12G3gzem7pY5ckw==",
+      "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": "1.17.7",
+        "@shikijs/types": "1.21.0",
         "@shikijs/vscode-textmate": "^9.2.2",
         "oniguruma-to-js": "0.4.3"
       }
     },
     "node_modules/@shikijs/engine-oniguruma": {
-      "version": "1.17.7",
-      "resolved": "https://registry.npmjs.org/@shikijs/engine-oniguruma/-/engine-oniguruma-1.17.7.tgz",
-      "integrity": "sha512-pvSYGnVeEIconU28NEzBXqSQC/GILbuNbAHwMoSfdTBrobKAsV1vq2K4cAgiaW1TJceLV9QMGGh18hi7cCzbVQ==",
+      "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": "1.17.7",
+        "@shikijs/types": "1.21.0",
         "@shikijs/vscode-textmate": "^9.2.2"
       }
     },
     "node_modules/@shikijs/types": {
-      "version": "1.17.7",
-      "resolved": "https://registry.npmjs.org/@shikijs/types/-/types-1.17.7.tgz",
-      "integrity": "sha512-+qA4UyhWLH2q4EFd+0z4K7GpERDU+c+CN2XYD3sC+zjvAr5iuwD1nToXZMt1YODshjkEGEDV86G7j66bKjqDdg==",
+      "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"
@@ -5659,14 +5659,14 @@
       }
     },
     "node_modules/shiki": {
-      "version": "1.17.7",
-      "resolved": "https://registry.npmjs.org/shiki/-/shiki-1.17.7.tgz",
-      "integrity": "sha512-Zf6hNtWhFyF4XP5OOsXkBTEx9JFPiN0TQx4wSe+Vqeuczewgk2vT4IZhF4gka55uelm052BD5BaHavNqUNZd+A==",
+      "version": "1.21.0",
+      "resolved": "https://registry.npmjs.org/shiki/-/shiki-1.21.0.tgz",
+      "integrity": "sha512-apCH5BoWTrmHDPGgg3RF8+HAAbEL/CdbYr8rMw7eIrdhCkZHdVGat5mMNlRtd1erNG01VPMIKHNQ0Pj2HMAiog==",
       "dependencies": {
-        "@shikijs/core": "1.17.7",
-        "@shikijs/engine-javascript": "1.17.7",
-        "@shikijs/engine-oniguruma": "1.17.7",
-        "@shikijs/types": "1.17.7",
+        "@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 db235cd..ae8a1a6 100644
--- a/package.json
+++ b/package.json
@@ -83,7 +83,7 @@
     "rfdc": "^1.4.1",
     "rimraf": "^6.0.1",
     "serve-handler": "^6.1.5",
-    "shiki": "^1.17.7",
+    "shiki": "^1.21.0",
     "source-map-support": "^0.5.21",
     "to-vfile": "^8.0.0",
     "toml": "^3.0.0",