diff --git a/package-lock.json b/package-lock.json
index a6a8c1b..f449285 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
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         "@11ty/eleventy-plugin-syntaxhighlight": "4.0.0",
         "@ampproject/toolbox-validator-rules": "2.8.0",
-        "csso": "5.0.2",
+        "csso": "5.0.5",
         "eleventy-plugin-toc": "1.1.5",
         "esbuild": "0.14.17",
         "eslint": "8.8.0",
@@ -580,6 +580,31 @@
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+    "node_modules/@types/linkify-it": {
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+      "resolved": "https://registry.npmjs.org/@types/linkify-it/-/linkify-it-3.0.2.tgz",
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+      "dev": true,
+      "peer": true
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+    "node_modules/@types/markdown-it": {
+      "version": "12.2.3",
+      "resolved": "https://registry.npmjs.org/@types/markdown-it/-/markdown-it-12.2.3.tgz",
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+      "dev": true,
+      "peer": true,
+      "dependencies": {
+        "@types/linkify-it": "*",
+        "@types/mdurl": "*"
+      }
+    },
+    "node_modules/@types/mdurl": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@types/mdurl/-/mdurl-1.0.2.tgz",
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+      "dev": true,
+      "peer": true
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       "version": "3.0.5",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.5.tgz",
@@ -2034,12 +2059,12 @@
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-      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.0.4.tgz",
-      "integrity": "sha512-b4IS9ZUMtGBiNjzYbcj9JhYbyei99R3ai2CSxlu8GQDnoPA/P+NU85hAm0eKDc/Zp660rpK6tFJQ2OSdacMHVg==",
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.2.1.tgz",
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       "dev": true,
       "dependencies": {
-        "mdn-data": "2.0.23",
+        "mdn-data": "2.0.28",
         "source-map-js": "^1.0.1"
       },
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@@ -2072,12 +2097,12 @@
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     "node_modules/csso": {
-      "version": "5.0.2",
-      "resolved": "https://registry.npmjs.org/csso/-/csso-5.0.2.tgz",
-      "integrity": "sha512-llFAe1UfFHy38ziX+YrPMGkn5MxdjzYtz0drvgnjRY/tLPmBRxotYTGO51BsKe9voQA074pEb0udV+piXH4scQ==",
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/csso/-/csso-5.0.5.tgz",
+      "integrity": "sha512-0LrrStPOdJj+SPCCrGhzryycLjwcgUSHBtxNA8aIDxf0GLsRh1cKYhB00Gd1lDOS4yGH69+SNn13+TWbVHETFQ==",
       "dev": true,
       "dependencies": {
-        "css-tree": "~2.0.4"
+        "css-tree": "~2.2.0"
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@@ -6713,9 +6738,9 @@
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     "node_modules/mdn-data": {
-      "version": "2.0.23",
-      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.23.tgz",
-      "integrity": "sha512-IonVb7pfla2U4zW8rc7XGrtgq11BvYeCxWN8HS+KFBnLDE7XDK9AAMVhRuG6fj9BBsjc69Fqsp6WEActEdNTDQ==",
+      "version": "2.0.28",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.28.tgz",
+      "integrity": "sha512-aylIc7Z9y4yzHYAJNuESG3hfhC+0Ibp/MAMiaOZgNv4pmEdFyfZhhhny4MNiAfWdBQ1RQ2mfDWmM1x8SvGyp8g==",
       "dev": true
     },
     "node_modules/mdurl": {
@@ -11785,6 +11810,31 @@
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       "dev": true
     },
+    "@types/linkify-it": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/@types/linkify-it/-/linkify-it-3.0.2.tgz",
+      "integrity": "sha512-HZQYqbiFVWufzCwexrvh694SOim8z2d+xJl5UNamcvQFejLY/2YUtzXHYi3cHdI7PMlS8ejH2slRAOJQ32aNbA==",
+      "dev": true,
+      "peer": true
+    },
+    "@types/markdown-it": {
+      "version": "12.2.3",
+      "resolved": "https://registry.npmjs.org/@types/markdown-it/-/markdown-it-12.2.3.tgz",
+      "integrity": "sha512-GKMHFfv3458yYy+v/N8gjufHO6MSZKCOXpZc5GXIWWy8uldwfmPn98vp81gZ5f9SVw8YYBctgfJ22a2d7AOMeQ==",
+      "dev": true,
+      "peer": true,
+      "requires": {
+        "@types/linkify-it": "*",
+        "@types/mdurl": "*"
+      }
+    },
+    "@types/mdurl": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/@types/mdurl/-/mdurl-1.0.2.tgz",
+      "integrity": "sha512-eC4U9MlIcu2q0KQmXszyn5Akca/0jrQmwDRgpAMJai7qBWq4amIQhZyNau4VYGtCeALvW1/NtjzJJ567aZxfKA==",
+      "dev": true,
+      "peer": true
+    },
     "@types/minimatch": {
       "version": "3.0.5",
       "resolved": "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.5.tgz",
@@ -12959,12 +13009,12 @@
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     "css-tree": {
-      "version": "2.0.4",
-      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.0.4.tgz",
-      "integrity": "sha512-b4IS9ZUMtGBiNjzYbcj9JhYbyei99R3ai2CSxlu8GQDnoPA/P+NU85hAm0eKDc/Zp660rpK6tFJQ2OSdacMHVg==",
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/css-tree/-/css-tree-2.2.1.tgz",
+      "integrity": "sha512-OA0mILzGc1kCOCSJerOeqDxDQ4HOh+G8NbOJFOTgOCzpw7fCBubk0fEyxp8AgOL/jvLgYA/uV0cMbe43ElF1JA==",
       "dev": true,
       "requires": {
-        "mdn-data": "2.0.23",
+        "mdn-data": "2.0.28",
         "source-map-js": "^1.0.1"
       }
     },
@@ -12981,12 +13031,12 @@
       "dev": true
     },
     "csso": {
-      "version": "5.0.2",
-      "resolved": "https://registry.npmjs.org/csso/-/csso-5.0.2.tgz",
-      "integrity": "sha512-llFAe1UfFHy38ziX+YrPMGkn5MxdjzYtz0drvgnjRY/tLPmBRxotYTGO51BsKe9voQA074pEb0udV+piXH4scQ==",
+      "version": "5.0.5",
+      "resolved": "https://registry.npmjs.org/csso/-/csso-5.0.5.tgz",
+      "integrity": "sha512-0LrrStPOdJj+SPCCrGhzryycLjwcgUSHBtxNA8aIDxf0GLsRh1cKYhB00Gd1lDOS4yGH69+SNn13+TWbVHETFQ==",
       "dev": true,
       "requires": {
-        "css-tree": "~2.0.4"
+        "css-tree": "~2.2.0"
       }
     },
     "cssom": {
@@ -16539,9 +16589,9 @@
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     "mdn-data": {
-      "version": "2.0.23",
-      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.23.tgz",
-      "integrity": "sha512-IonVb7pfla2U4zW8rc7XGrtgq11BvYeCxWN8HS+KFBnLDE7XDK9AAMVhRuG6fj9BBsjc69Fqsp6WEActEdNTDQ==",
+      "version": "2.0.28",
+      "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.0.28.tgz",
+      "integrity": "sha512-aylIc7Z9y4yzHYAJNuESG3hfhC+0Ibp/MAMiaOZgNv4pmEdFyfZhhhny4MNiAfWdBQ1RQ2mfDWmM1x8SvGyp8g==",
       "dev": true
     },
     "mdurl": {
diff --git a/package.json b/package.json
index a9dd62d..cf3ab15 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "@11ty/eleventy-plugin-rss": "1.1.2",
     "@11ty/eleventy-plugin-syntaxhighlight": "4.0.0",
     "@ampproject/toolbox-validator-rules": "2.8.0",
-    "csso": "5.0.2",
+    "csso": "5.0.5",
     "eleventy-plugin-toc": "1.1.5",
     "esbuild": "0.14.17",
     "eslint": "8.8.0",