diff --git a/package-lock.json b/package-lock.json
index 238013a3c..6b630a7e2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,7 +12,7 @@
         "@11ty/eleventy": "^0.12.1",
         "@11ty/eleventy-plugin-syntaxhighlight": "^3.1.3",
         "all-contributors-cli": "^6.20.0",
-        "clean-css": "^5.2.0",
+        "clean-css": "^5.3.0",
         "html-minifier": "^4.0.0",
         "luxon": "^2.1.1",
         "markdown-it": "^12.2.0",
@@ -775,9 +775,9 @@
       }
     },
     "node_modules/clean-css": {
-      "version": "5.2.2",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.2.tgz",
-      "integrity": "sha512-/eR8ru5zyxKzpBLv9YZvMXgTSSQn7AdkMItMYynsFgGwTveCRVam9IUPFloE85B4vAIj05IuKmmEoV7/AQjT0w==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.3.0.tgz",
+      "integrity": "sha512-YYuuxv4H/iNb1Z/5IbMRoxgrzjWGhOEFfd+groZ5dMCVkpENiMZmwspdrzBo9286JjM1gZJPAyL7ZIdzuvu2AQ==",
       "dev": true,
       "dependencies": {
         "source-map": "~0.6.0"
@@ -5256,9 +5256,9 @@
       }
     },
     "clean-css": {
-      "version": "5.2.2",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.2.tgz",
-      "integrity": "sha512-/eR8ru5zyxKzpBLv9YZvMXgTSSQn7AdkMItMYynsFgGwTveCRVam9IUPFloE85B4vAIj05IuKmmEoV7/AQjT0w==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.3.0.tgz",
+      "integrity": "sha512-YYuuxv4H/iNb1Z/5IbMRoxgrzjWGhOEFfd+groZ5dMCVkpENiMZmwspdrzBo9286JjM1gZJPAyL7ZIdzuvu2AQ==",
       "dev": true,
       "requires": {
         "source-map": "~0.6.0"
diff --git a/package.json b/package.json
index 5d5d2a44c..8f4a828dc 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "@11ty/eleventy": "^0.12.1",
     "@11ty/eleventy-plugin-syntaxhighlight": "^3.1.3",
     "all-contributors-cli": "^6.20.0",
-    "clean-css": "^5.2.0",
+    "clean-css": "^5.3.0",
     "html-minifier": "^4.0.0",
     "luxon": "^2.1.1",
     "markdown-it": "^12.2.0",