diff --git a/package-lock.json b/package-lock.json
index d2619d5..4b583a9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -693,9 +693,9 @@
             }
         },
         "clean-css": {
-            "version": "4.2.1",
-            "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.1.tgz",
-            "integrity": "sha512-4ZxI6dy4lrY6FHzfiy1aEOXgu4LIsW2MhwG0VBKdcoGoH/XLFgaHSdLTGr4O8Be6A8r3MOphEiI8Gc1n0ecf3g==",
+            "version": "4.2.3",
+            "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.3.tgz",
+            "integrity": "sha512-VcMWDN54ZN/DS+g58HYL5/n4Zrqe8vHJpGA8KdgUXFU4fuP/aHNw8eld9SyEIyabIMJX/0RaY/fplOo5hYLSFA==",
             "dev": true,
             "requires": {
                 "source-map": "~0.6.0"
@@ -2594,12 +2594,12 @@
             }
         },
         "gulp-clean-css": {
-            "version": "4.2.0",
-            "resolved": "https://registry.npmjs.org/gulp-clean-css/-/gulp-clean-css-4.2.0.tgz",
-            "integrity": "sha512-r4zQsSOAK2UYUL/ipkAVCTRg/2CLZ2A+oPVORopBximRksJ6qy3EX1KGrIWT4ZrHxz3Hlobb1yyJtqiut7DNjA==",
+            "version": "4.3.0",
+            "resolved": "https://registry.npmjs.org/gulp-clean-css/-/gulp-clean-css-4.3.0.tgz",
+            "integrity": "sha512-mGyeT3qqFXTy61j0zOIciS4MkYziF2U594t2Vs9rUnpkEHqfu6aDITMp8xOvZcvdX61Uz3y1mVERRYmjzQF5fg==",
             "dev": true,
             "requires": {
-                "clean-css": "4.2.1",
+                "clean-css": "4.2.3",
                 "plugin-error": "1.0.1",
                 "through2": "3.0.1",
                 "vinyl-sourcemaps-apply": "0.2.1"
diff --git a/package.json b/package.json
index b64d582..302639d 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "devDependencies": {
         "browser-sync": "2.26.7",
         "gulp": "^3.9.1",
-        "gulp-clean-css": "4.2.0",
+        "gulp-clean-css": "4.3.0",
         "gulp-header": "2.0.9",
         "gulp-rename": "^1.2.2",
         "gulp-sass": "^4.0.1",