diff --git a/package-lock.json b/package-lock.json
index 61f8f3c..5996658 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -192,9 +192,9 @@
       }
     },
     "clean-css-cli": {
-      "version": "4.2.1",
-      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-4.2.1.tgz",
-      "integrity": "sha512-ST2yi9F2kAmLRs9phSpGRUm44SbRy29QGm1OuAKfTU0KCLilFMTcz+/Fxhbdi5GrsjIMhTBdFUQhc55CjM3Isw==",
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-4.3.0.tgz",
+      "integrity": "sha512-8GHZfr+mG3zB/Lgqrr27qHBFsPSn0fyEI3f2rIZpxPxUbn2J6A8xyyeBRVTW8duDuXigN0s80vsXiXJOEFIO5Q==",
       "dev": true,
       "requires": {
         "clean-css": "^4.2.1",
@@ -229,9 +229,9 @@
       }
     },
     "commander": {
-      "version": "2.17.1",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.17.1.tgz",
-      "integrity": "sha512-wPMUt6FnH2yzG95SA6mzjQOEKUU3aLaDEmzs1ti+1E9h+CsrZghRlqEM/EJ4KscsQVG8uNN4uVreUeT8+drlgg==",
+      "version": "2.20.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
+      "integrity": "sha512-7j2y+40w61zy6YC2iRNpUe/NwhNyoXrYpHMrSunaMG64nRnaf96zO/KMQR4OyN/UnE5KLyEBnKHd4aG3rskjpQ==",
       "dev": true
     },
     "concat-map": {
diff --git a/package.json b/package.json
index 9764843..a3a3801 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   "license": "CC-BY-3.0",
   "devDependencies": {
     "bootstrap": "~4.3.1",
-    "clean-css-cli": "^4.2.1",
+    "clean-css-cli": "^4.3.0",
     "cookieconsent": "3.0.4",
     "font-awesome": "^4.7.0",
     "node-sass": "^4.11.0"