diff --git a/src/package-lock.json b/src/package-lock.json
index 439cb148..83694c8e 100644
--- a/src/package-lock.json
+++ b/src/package-lock.json
@@ -1618,9 +1618,9 @@
       "optional": true
     },
     "clean-css": {
-      "version": "5.2.4",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.4.tgz",
-      "integrity": "sha512-nKseG8wCzEuji/4yrgM/5cthL9oTDc5UOQyFMvW/Q53oP6gLH690o1NbuTh6Y18nujr7BxlsFuS7gXLnLzKJGg==",
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.3.0.tgz",
+      "integrity": "sha512-YYuuxv4H/iNb1Z/5IbMRoxgrzjWGhOEFfd+groZ5dMCVkpENiMZmwspdrzBo9286JjM1gZJPAyL7ZIdzuvu2AQ==",
       "requires": {
         "source-map": "~0.6.0"
       }
diff --git a/src/package.json b/src/package.json
index 1b3aef26..20d47a43 100644
--- a/src/package.json
+++ b/src/package.json
@@ -31,7 +31,7 @@
   ],
   "dependencies": {
     "async": "^3.2.2",
-    "clean-css": "^5.2.4",
+    "clean-css": "^5.3.0",
     "cookie-parser": "^1.4.6",
     "cross-spawn": "^7.0.3",
     "ejs": "^3.1.6",