diff --git a/package-lock.json b/package-lock.json
index a1605b9..ba1b999 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -84,12 +84,34 @@
             "upath": "^1.1.1"
           }
         },
+        "linkify-it": {
+          "version": "2.2.0",
+          "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-2.2.0.tgz",
+          "integrity": "sha512-GnAl/knGn+i1U/wjBz3akz2stz+HrHLsxMwHQGofCDfPvlf+gDKN58UtfmUquTY4/MXeE2x7k19KQmeoZi94Iw==",
+          "dev": true,
+          "requires": {
+            "uc.micro": "^1.0.1"
+          }
+        },
         "luxon": {
           "version": "1.15.0",
           "resolved": "https://registry.npmjs.org/luxon/-/luxon-1.15.0.tgz",
           "integrity": "sha512-HIpK4zIonObWHj9UC80ElykmM/0jTuuXcbPYBYbDGZ3Cq2bL9rACcmppoc6zm5JnmHpnK5bRMIp8/+ei4O0y2Q==",
           "dev": true
         },
+        "markdown-it": {
+          "version": "8.4.2",
+          "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-8.4.2.tgz",
+          "integrity": "sha512-GcRz3AWTqSUphY3vsUqQSFMbgR38a4Lh3GWlHRh/7MRwz8mcu9n2IO7HOh+bXHrR9kOPDl5RNCaEsrneb+xhHQ==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "entities": "~1.1.1",
+            "linkify-it": "^2.0.0",
+            "mdurl": "^1.0.1",
+            "uc.micro": "^1.0.5"
+          }
+        },
         "semver": {
           "version": "6.1.1",
           "resolved": "https://registry.npmjs.org/semver/-/semver-6.1.1.tgz",
@@ -7310,9 +7332,9 @@
       "dev": true
     },
     "linkify-it": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-2.0.3.tgz",
-      "integrity": "sha1-2UpGSPmxwXnWT6lykSaL22zpQ08=",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/linkify-it/-/linkify-it-3.0.3.tgz",
+      "integrity": "sha512-ynTsyrFSdE5oZ/O9GEf00kPngmOfVwazR5GKDq6EYfhlpFug3J2zybX56a2PRRpc9P+FuSoGNAwjlbDs9jJBPQ==",
       "dev": true,
       "requires": {
         "uc.micro": "^1.0.1"
@@ -7555,16 +7577,30 @@
       }
     },
     "markdown-it": {
-      "version": "8.4.2",
-      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-8.4.2.tgz",
-      "integrity": "sha512-GcRz3AWTqSUphY3vsUqQSFMbgR38a4Lh3GWlHRh/7MRwz8mcu9n2IO7HOh+bXHrR9kOPDl5RNCaEsrneb+xhHQ==",
+      "version": "12.3.2",
+      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-12.3.2.tgz",
+      "integrity": "sha512-TchMembfxfNVpHkbtriWltGWc+m3xszaRD0CZup7GFFhzIgQqxIfn3eGj1yZpfuflzPvfkt611B2Q/Bsk1YnGg==",
       "dev": true,
       "requires": {
-        "argparse": "^1.0.7",
-        "entities": "~1.1.1",
-        "linkify-it": "^2.0.0",
+        "argparse": "^2.0.1",
+        "entities": "~2.1.0",
+        "linkify-it": "^3.0.1",
         "mdurl": "^1.0.1",
         "uc.micro": "^1.0.5"
+      },
+      "dependencies": {
+        "argparse": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
+          "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
+          "dev": true
+        },
+        "entities": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/entities/-/entities-2.1.0.tgz",
+          "integrity": "sha512-hCx1oky9PFrJ611mf0ifBLBRW8lUUVRlFolb5gWRfIELabBlbp9xZvrqZLZAs+NxFnbfQoeGd8wDkygjg7U85w==",
+          "dev": true
+        }
       }
     },
     "markdown-it-anchor": {
@@ -12023,9 +12059,9 @@
       "dev": true
     },
     "uc.micro": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.5.tgz",
-      "integrity": "sha512-JoLI4g5zv5qNyT09f4YAvEZIIV1oOjqnewYg5D38dkQljIzpPT296dbIGvKro3digYI1bkb7W6EP1y4uDlmzLg==",
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/uc.micro/-/uc.micro-1.0.6.tgz",
+      "integrity": "sha512-8Y75pvTYkLJW2hWQHXxoqRgV7qb9B+9vFEtidML+7koHUFapnVJAZ6cKs+Qjz5Aw3aZWHMC6u0wJE3At+nSGwA==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 166e8fd..51d6f9a 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "eleventy-plugin-nesting-toc": "^1.1.0",
     "express": "^4.17.1",
     "luxon": "^1.21.3",
-    "markdown-it": "^8.4.1",
+    "markdown-it": "^12.3.2",
     "markdown-it-anchor": "^5.2.5",
     "mini-css-extract-plugin": "^0.5.0",
     "node-sass": "^4.13.0",