diff --git a/package-lock.json b/package-lock.json
index 8905fb30f0..97f1010110 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3061,23 +3061,31 @@
       }
     },
     "clean-css": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.1.tgz",
-      "integrity": "sha512-4ZxI6dy4lrY6FHzfiy1aEOXgu4LIsW2MhwG0VBKdcoGoH/XLFgaHSdLTGr4O8Be6A8r3MOphEiI8Gc1n0ecf3g==",
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.0.1.tgz",
+      "integrity": "sha512-F1zAGOowUCg8yxT0O4UR+nmbMauf3YwbiUS60CPxpzJU7ulpamGzQomFrJSK4w/HqHtMmQKSHJUNue+dQQYQdg==",
       "dev": true,
       "requires": {
         "source-map": "~0.6.0"
       }
     },
     "clean-css-cli": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-4.3.0.tgz",
-      "integrity": "sha512-8GHZfr+mG3zB/Lgqrr27qHBFsPSn0fyEI3f2rIZpxPxUbn2J6A8xyyeBRVTW8duDuXigN0s80vsXiXJOEFIO5Q==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.1.0.tgz",
+      "integrity": "sha512-aIN3BzIYl53O6iyR1CliCcgCw0A8y5a/1U4K4KlFMtGlrP04cHFZWPbU8g93ACSGP4lgfI+FBqA0jo0PsSDGoQ==",
       "dev": true,
       "requires": {
-        "clean-css": "^4.2.1",
-        "commander": "2.x",
-        "glob": "7.x"
+        "clean-css": "^5.0.1",
+        "commander": "7.x",
+        "glob": "^7.1.6"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "7.0.0",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-7.0.0.tgz",
+          "integrity": "sha512-ovx/7NkTrnPuIV8sqk/GjUIIM1+iUQeqA3ye2VNpq9sVoiZsooObWlQy+OPWGI17GDaEoybuAGJm6U8yC077BA==",
+          "dev": true
+        }
       }
     },
     "clean-stack": {
diff --git a/package.json b/package.json
index 439239144d..2e4bbe98e2 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "buble": "^0.20.0",
     "buble-loader": "^0.5.1",
     "chaikin-smooth": "^1.0.4",
-    "clean-css-cli": "4.3.0",
+    "clean-css-cli": "5.1.0",
     "copy-webpack-plugin": "^6.0.1",
     "coveralls": "3.1.0",
     "eslint": "^7.2.0",