diff --git a/package-lock.json b/package-lock.json
index 79bacc4..6464f3d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -25,7 +25,7 @@
                 "babelify": "^10.0.0",
                 "browserify": "^17.0.0",
                 "cross-env": "^7.0.3",
-                "cssnano": "^5.1.12",
+                "cssnano": "^5.1.13",
                 "del": "^6.1.1",
                 "factor-bundle": "^2.5.0",
                 "gulp": "^4.0.2",
@@ -4537,9 +4537,9 @@
             }
         },
         "node_modules/cssnano": {
-            "version": "5.1.12",
-            "resolved": "https://registry.npmjs.org/cssnano/-/cssnano-5.1.12.tgz",
-            "integrity": "sha512-TgvArbEZu0lk/dvg2ja+B7kYoD7BBCmn3+k58xD0qjrGHsFzXY/wKTo9M5egcUCabPol05e/PVoIu79s2JN4WQ==",
+            "version": "5.1.13",
+            "resolved": "https://registry.npmjs.org/cssnano/-/cssnano-5.1.13.tgz",
+            "integrity": "sha512-S2SL2ekdEz6w6a2epXn4CmMKU4K3KpcyXLKfAYc9UQQqJRkD/2eLUG0vJ3Db/9OvO5GuAdgXw3pFbR6abqghDQ==",
             "dev": true,
             "dependencies": {
                 "cssnano-preset-default": "^5.2.12",
@@ -18325,9 +18325,9 @@
             "dev": true
         },
         "cssnano": {
-            "version": "5.1.12",
-            "resolved": "https://registry.npmjs.org/cssnano/-/cssnano-5.1.12.tgz",
-            "integrity": "sha512-TgvArbEZu0lk/dvg2ja+B7kYoD7BBCmn3+k58xD0qjrGHsFzXY/wKTo9M5egcUCabPol05e/PVoIu79s2JN4WQ==",
+            "version": "5.1.13",
+            "resolved": "https://registry.npmjs.org/cssnano/-/cssnano-5.1.13.tgz",
+            "integrity": "sha512-S2SL2ekdEz6w6a2epXn4CmMKU4K3KpcyXLKfAYc9UQQqJRkD/2eLUG0vJ3Db/9OvO5GuAdgXw3pFbR6abqghDQ==",
             "dev": true,
             "requires": {
                 "cssnano-preset-default": "^5.2.12",
diff --git a/package.json b/package.json
index e5dcaee..ef02904 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
         "babelify": "^10.0.0",
         "browserify": "^17.0.0",
         "cross-env": "^7.0.3",
-        "cssnano": "^5.1.12",
+        "cssnano": "^5.1.13",
         "del": "^6.1.1",
         "factor-bundle": "^2.5.0",
         "gulp": "^4.0.2",