diff --git a/package-lock.json b/package-lock.json
index fe1d7a3..4f8b031 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,7 +7,7 @@
       "name": "@antora/ui-default",
       "license": "MPL-2.0",
       "devDependencies": {
-        "@asciidoctor/core": "~2.2",
+        "@asciidoctor/core": "~3.0.0",
         "@asciidoctor/tabs": "^1.0.0-beta.6",
         "@fontsource/ibm-plex-mono": "^5.0.14",
         "@fontsource/noto-sans": "^5.0.22",
@@ -69,18 +69,96 @@
       }
     },
     "node_modules/@asciidoctor/core": {
-      "version": "2.2.8",
-      "resolved": "https://registry.npmjs.org/@asciidoctor/core/-/core-2.2.8.tgz",
-      "integrity": "sha512-oozXk7ZO1RAd/KLFLkKOhqTcG4GO3CV44WwOFg2gMcCsqCUTarvMT7xERIoWW2WurKbB0/ce+98r01p8xPOlBw==",
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/@asciidoctor/core/-/core-3.0.4.tgz",
+      "integrity": "sha512-41SDMi7iRRBViPe0L6VWFTe55bv6HEOJeRqMj5+E5wB1YPdUPuTucL4UAESPZM6OWmn4t/5qM5LusXomFUVwVQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@asciidoctor/opal-runtime": "3.0.1",
+        "unxhr": "1.2.0"
+      },
+      "engines": {
+        "node": ">=16",
+        "npm": ">=8"
+      }
+    },
+    "node_modules/@asciidoctor/core/node_modules/unxhr": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/unxhr/-/unxhr-1.2.0.tgz",
+      "integrity": "sha512-6cGpm8NFXPD9QbSNx0cD2giy7teZ6xOkCUH3U89WKVkL9N9rBrWjlCwhR94Re18ZlAop4MOc3WU1M3Hv/bgpIw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8.11"
+      }
+    },
+    "node_modules/@asciidoctor/opal-runtime": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/@asciidoctor/opal-runtime/-/opal-runtime-3.0.1.tgz",
+      "integrity": "sha512-iW7ACahOG0zZft4A/4CqDcc7JX+fWRNjV5tFAVkNCzwZD+EnFolPaUOPYt8jzadc0+Bgd80cQTtRMQnaaV1kkg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "glob": "8.1.0",
+        "unxhr": "1.2.0"
+      },
+      "engines": {
+        "node": ">=16"
+      }
+    },
+    "node_modules/@asciidoctor/opal-runtime/node_modules/brace-expansion": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-2.0.1.tgz",
+      "integrity": "sha512-XnAIvQ8eM+kC6aULx6wuQiwVsnzsi9d3WxzV3FpWTGA19F621kwdbsAcFKXgKUHZWsy+mY6iL1sHTxWEFCytDA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^1.0.0"
+      }
+    },
+    "node_modules/@asciidoctor/opal-runtime/node_modules/glob": {
+      "version": "8.1.0",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-8.1.0.tgz",
+      "integrity": "sha512-r8hpEjiQEYlF2QU0df3dS+nxxSIreXQS1qRhMJM0Q5NDdR386C7jb7Hwwod8Fgiuex+k0GFjgft18yvxm5XoCQ==",
+      "deprecated": "Glob versions prior to v9 are no longer supported",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "fs.realpath": "^1.0.0",
+        "inflight": "^1.0.4",
+        "inherits": "2",
+        "minimatch": "^5.0.1",
+        "once": "^1.3.0"
+      },
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/@asciidoctor/opal-runtime/node_modules/minimatch": {
+      "version": "5.1.6",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.6.tgz",
+      "integrity": "sha512-lKwV/1brpG6mBUFHtb7NUmtABCb2WZZmm2wNiOA5hAb8VdCS4B3dtMWyvcoViccwAW/COERjXLt0zP1zXUN26g==",
       "dev": true,
+      "license": "ISC",
       "dependencies": {
-        "asciidoctor-opal-runtime": "0.3.3",
-        "unxhr": "1.0.1"
+        "brace-expansion": "^2.0.1"
       },
       "engines": {
-        "node": ">=8.11",
-        "npm": ">=5.0.0",
-        "yarn": ">=1.1.0"
+        "node": ">=10"
+      }
+    },
+    "node_modules/@asciidoctor/opal-runtime/node_modules/unxhr": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/unxhr/-/unxhr-1.2.0.tgz",
+      "integrity": "sha512-6cGpm8NFXPD9QbSNx0cD2giy7teZ6xOkCUH3U89WKVkL9N9rBrWjlCwhR94Re18ZlAop4MOc3WU1M3Hv/bgpIw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8.11"
       }
     },
     "node_modules/@asciidoctor/tabs": {
@@ -1459,19 +1537,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/asciidoctor-opal-runtime": {
-      "version": "0.3.3",
-      "resolved": "https://registry.npmjs.org/asciidoctor-opal-runtime/-/asciidoctor-opal-runtime-0.3.3.tgz",
-      "integrity": "sha512-/CEVNiOia8E5BMO9FLooo+Kv18K4+4JBFRJp8vUy/N5dMRAg+fRNV4HA+o6aoSC79jVU/aT5XvUpxSxSsTS8FQ==",
-      "dev": true,
-      "dependencies": {
-        "glob": "7.1.3",
-        "unxhr": "1.0.1"
-      },
-      "engines": {
-        "node": ">=8.11"
-      }
-    },
     "node_modules/asn1.js": {
       "version": "4.10.1",
       "resolved": "https://registry.npmjs.org/asn1.js/-/asn1.js-4.10.1.tgz",
@@ -17904,15 +17969,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/unxhr": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/unxhr/-/unxhr-1.0.1.tgz",
-      "integrity": "sha512-MAhukhVHyaLGDjyDYhy8gVjWJyhTECCdNsLwlMoGFoNJ3o79fpQhtQuzmAE4IxCMDwraF4cW8ZjpAV0m9CRQbg==",
-      "dev": true,
-      "engines": {
-        "node": ">=8.11"
-      }
-    },
     "node_modules/upath": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/upath/-/upath-1.2.0.tgz",
diff --git a/package.json b/package.json
index 507139a..a247d26 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "last 2 versions"
   ],
   "devDependencies": {
-    "@asciidoctor/core": "~2.2",
+    "@asciidoctor/core": "~3.0.0",
     "@asciidoctor/tabs": "^1.0.0-beta.6",
     "@fontsource/ibm-plex-mono": "^5.0.14",
     "@fontsource/noto-sans": "^5.0.22",