diff --git a/src/package-lock.json b/src/package-lock.json
index 2b199c6f8..f028c4a8e 100644
--- a/src/package-lock.json
+++ b/src/package-lock.json
@@ -1271,9 +1271,9 @@
       "optional": true
     },
     "clean-css": {
-      "version": "5.1.5",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.1.5.tgz",
-      "integrity": "sha512-9dr/cU/LjMpU57PXlSvDkVRh0rPxJBXiBtD0+SgYt8ahTCsXtfKjCkNYgIoTC6mBg8CFr5EKhW3DKCaGMUbUfQ==",
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.0.tgz",
+      "integrity": "sha512-2639sWGa43EMmG7fn8mdVuBSs6HuWaSor+ZPoFWzenBc6oN+td8YhTfghWXZ25G1NiiSvz8bOFBS7PdSbTiqEA==",
       "requires": {
         "source-map": "~0.6.0"
       }
diff --git a/src/package.json b/src/package.json
index 5b8bff69d..309d7f622 100644
--- a/src/package.json
+++ b/src/package.json
@@ -32,7 +32,7 @@
   "dependencies": {
     "async": "^3.2.1",
     "channels": "0.0.4",
-    "clean-css": "^5.1.5",
+    "clean-css": "^5.2.0",
     "cookie-parser": "1.4.5",
     "cross-spawn": "^7.0.3",
     "ejs": "^3.1.6",