diff --git a/package-lock.json b/package-lock.json
index a310576..498612d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,11 +5,11 @@
   "requires": true,
   "dependencies": {
     "@asciidoctor/core": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/@asciidoctor/core/-/core-2.2.0.tgz",
-      "integrity": "sha512-WN/mFuU4SeWaDqpGvRwAf+Tq2T8NQkVVpZ3Ne1/ZRxDKElzFkqq8bGbmxSMWmMVzC+H9ZO1YxxbOjhWEiNvpOA==",
+      "version": "2.2.6",
+      "resolved": "https://registry.npmjs.org/@asciidoctor/core/-/core-2.2.6.tgz",
+      "integrity": "sha512-TmB2K5UfpDpSbCNBBntXzKHcAk2EA3/P68jmWvmJvglVUdkO9V6kTAuXVe12+h6C4GK0ndwuCrHHtEVcL5t6pQ==",
       "requires": {
-        "asciidoctor-opal-runtime": "0.3.0",
+        "asciidoctor-opal-runtime": "0.3.3",
         "unxhr": "1.0.1"
       }
     },
@@ -52,28 +52,72 @@
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     },
     "asciidoctor": {
-      "version": "2.2.0",
-      "resolved": "https://registry.npmjs.org/asciidoctor/-/asciidoctor-2.2.0.tgz",
-      "integrity": "sha512-w5oBMYPaA5RP/Qlv6XQzWE7kSf8d9sLMRBItcU+nn7E/FF9yGLUd1p/dzqWiu600KyNHBpp8Ml/VTaGjUm6LrQ==",
+      "version": "2.2.6",
+      "resolved": "https://registry.npmjs.org/asciidoctor/-/asciidoctor-2.2.6.tgz",
+      "integrity": "sha512-EXG3+F2pO21B+COfQmV/WgEgGiy7nG/mJiS/o5DXpaT2q82FRZWPVkbMZrpDvpu4pjXe5c754RbZR9Vz0L0Vtw==",
       "requires": {
-        "@asciidoctor/cli": "3.4.0",
-        "@asciidoctor/core": "2.2.0"
+        "@asciidoctor/cli": "3.5.0",
+        "@asciidoctor/core": "2.2.6"
       },
       "dependencies": {
         "@asciidoctor/cli": {
-          "version": "3.4.0",
-          "resolved": "https://registry.npmjs.org/@asciidoctor/cli/-/cli-3.4.0.tgz",
-          "integrity": "sha512-jOtxA0I6zB+6z+GGwm9+xhlmGTqCTkFPE902L6fauFlE6v7LxjhLYNxvjDVyn0zMrFLybvoSRcAnM3DcticNoQ==",
+          "version": "3.5.0",
+          "resolved": "https://registry.npmjs.org/@asciidoctor/cli/-/cli-3.5.0.tgz",
+          "integrity": "sha512-/VMHXcZBnZ9vgWfmqk9Hu0x0gMjPLup0YGq/xA8qCQuk11kUIZNMVQwgSsIUzOEwJqIUD7CgncJdtfwv1Ndxuw==",
           "requires": {
-            "yargs": "15.3.1"
+            "yargs": "16.2.0"
           }
+        },
+        "cliui": {
+          "version": "7.0.4",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-7.0.4.tgz",
+          "integrity": "sha512-OcRE68cOsVMXp1Yvonl/fzkQOyjLSu/8bhPDfQt0e0/Eb283TKP20Fs2MqoPsr9SwA595rRCA+QMzYc9nBP+JQ==",
+          "requires": {
+            "string-width": "^4.2.0",
+            "strip-ansi": "^6.0.0",
+            "wrap-ansi": "^7.0.0"
+          }
+        },
+        "wrap-ansi": {
+          "version": "7.0.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-7.0.0.tgz",
+          "integrity": "sha512-YVGIj2kamLSTxw6NsZjoBxfSwsn0ycdesmc4p+Q21c5zPuZ1pl+NfxVdxPtdHvmNVOQ6XSYG4AUtyt/Fi7D16Q==",
+          "requires": {
+            "ansi-styles": "^4.0.0",
+            "string-width": "^4.1.0",
+            "strip-ansi": "^6.0.0"
+          }
+        },
+        "y18n": {
+          "version": "5.0.8",
+          "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
+          "integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA=="
+        },
+        "yargs": {
+          "version": "16.2.0",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-16.2.0.tgz",
+          "integrity": "sha512-D1mvvtDG0L5ft/jGWkLpG1+m0eQxOfaBvTNELraWj22wSVUMWxZUvYgJYcKh6jGGIkJFhH4IZPQhR4TKpc8mBw==",
+          "requires": {
+            "cliui": "^7.0.2",
+            "escalade": "^3.1.1",
+            "get-caller-file": "^2.0.5",
+            "require-directory": "^2.1.1",
+            "string-width": "^4.2.0",
+            "y18n": "^5.0.5",
+            "yargs-parser": "^20.2.2"
+          }
+        },
+        "yargs-parser": {
+          "version": "20.2.9",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-20.2.9.tgz",
+          "integrity": "sha512-y11nGElTIV+CT3Zv9t7VKl+Q3hTQoT9a1Qzezhhl6Rp21gJ/IVTW7Z3y9EWXhuUBC2Shnf+DX0antecpAwSP8w=="
         }
       }
     },
     "asciidoctor-opal-runtime": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/asciidoctor-opal-runtime/-/asciidoctor-opal-runtime-0.3.0.tgz",
-      "integrity": "sha512-YapVwl2qbbs6sIe1dvAlMpBzQksFVTSa2HOduOKFNhZlE9bNmn+moDgGVvjWPbzMPo/g8gItyTHfWB2u7bQxag==",
+      "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==",
       "requires": {
         "glob": "7.1.3",
         "unxhr": "1.0.1"
@@ -141,6 +185,11 @@
       "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-8.0.0.tgz",
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     },
+    "escalade": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
+      "integrity": "sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw=="
+    },
     "find-up": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
diff --git a/package.json b/package.json
index b5bdcbe..3b98d23 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   "homepage": "https://github.com/feelpp/github#readme",
   "dependencies": {
     "@asciidoctor/reveal.js": "^4.0.1",
-    "asciidoctor": "^2.2.0",
+    "asciidoctor": "^2.2.6",
     "node-srv": "^3.0.2"
   }
 }