diff --git a/package-lock.json b/package-lock.json
index cb011551..e0826d18 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -779,9 +779,9 @@
       }
     },
     "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",
diff --git a/package.json b/package.json
index 18b32ef7..95edee4c 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
   "devDependencies": {
     "autoprefixer": "9.5.1",
     "bulma": "0.7.4",
-    "clean-css-cli": "4.2.1",
+    "clean-css-cli": "4.3.0",
     "node-sass": "4.11.0",
     "postcss-cli": "6.1.2",
     "release-it": "10.4.0",