diff --git a/package-lock.json b/package-lock.json
index 5f649283ee..55b72140b3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
         "@types/topojson-specification": "^1.0.1",
         "babel-loader": "^8.2.2",
         "chaikin-smooth": "^1.0.4",
-        "clean-css-cli": "5.4.1",
+        "clean-css-cli": "5.4.2",
         "copy-webpack-plugin": "^9.0.0",
         "coverage-istanbul-loader": "^3.0.5",
         "coveralls": "3.1.1",
@@ -3010,9 +3010,9 @@
       }
     },
     "node_modules/clean-css": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.1.tgz",
-      "integrity": "sha512-ooQCa1/70oRfVdUUGjKpbHuxgMgm8BsDT5EBqBGvPxMoRoGXf4PNx5mMnkjzJ9Ptx4vvmDdha0QVh86QtYIk1g==",
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.2.tgz",
+      "integrity": "sha512-/eR8ru5zyxKzpBLv9YZvMXgTSSQn7AdkMItMYynsFgGwTveCRVam9IUPFloE85B4vAIj05IuKmmEoV7/AQjT0w==",
       "dev": true,
       "dependencies": {
         "source-map": "~0.6.0"
@@ -3022,12 +3022,12 @@
       }
     },
     "node_modules/clean-css-cli": {
-      "version": "5.4.1",
-      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.4.1.tgz",
-      "integrity": "sha512-LQLY8HKQP2d/M0FVbNfpoVbHMHh/ARIET2r80odAKuTN0RUOp8J8pU9eDlqMa1yezuUH3ipQxTVM/+vpunAhnA==",
+      "version": "5.4.2",
+      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.4.2.tgz",
+      "integrity": "sha512-BYxVOuBQL8f2+yucOgmwUi1idpAQV4k9bxG6mxTrBikuwrkXBG5/Pq6tqCi4GZUtgvslMj8dGVtFSoXp9OLzeA==",
       "dev": true,
       "dependencies": {
-        "clean-css": "^5.2.1",
+        "clean-css": "^5.2.2",
         "commander": "7.x",
         "glob": "^7.1.6"
       },
@@ -13233,9 +13233,9 @@
       "dev": true
     },
     "clean-css": {
-      "version": "5.2.1",
-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.1.tgz",
-      "integrity": "sha512-ooQCa1/70oRfVdUUGjKpbHuxgMgm8BsDT5EBqBGvPxMoRoGXf4PNx5mMnkjzJ9Ptx4vvmDdha0QVh86QtYIk1g==",
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.2.2.tgz",
+      "integrity": "sha512-/eR8ru5zyxKzpBLv9YZvMXgTSSQn7AdkMItMYynsFgGwTveCRVam9IUPFloE85B4vAIj05IuKmmEoV7/AQjT0w==",
       "dev": true,
       "requires": {
         "source-map": "~0.6.0"
@@ -13250,12 +13250,12 @@
       }
     },
     "clean-css-cli": {
-      "version": "5.4.1",
-      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.4.1.tgz",
-      "integrity": "sha512-LQLY8HKQP2d/M0FVbNfpoVbHMHh/ARIET2r80odAKuTN0RUOp8J8pU9eDlqMa1yezuUH3ipQxTVM/+vpunAhnA==",
+      "version": "5.4.2",
+      "resolved": "https://registry.npmjs.org/clean-css-cli/-/clean-css-cli-5.4.2.tgz",
+      "integrity": "sha512-BYxVOuBQL8f2+yucOgmwUi1idpAQV4k9bxG6mxTrBikuwrkXBG5/Pq6tqCi4GZUtgvslMj8dGVtFSoXp9OLzeA==",
       "dev": true,
       "requires": {
-        "clean-css": "^5.2.1",
+        "clean-css": "^5.2.2",
         "commander": "7.x",
         "glob": "^7.1.6"
       }
diff --git a/package.json b/package.json
index fccbd08d4e..76b87637f5 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "@types/topojson-specification": "^1.0.1",
     "babel-loader": "^8.2.2",
     "chaikin-smooth": "^1.0.4",
-    "clean-css-cli": "5.4.1",
+    "clean-css-cli": "5.4.2",
     "copy-webpack-plugin": "^9.0.0",
     "coverage-istanbul-loader": "^3.0.5",
     "coveralls": "3.1.1",