diff --git a/package-lock.json b/package-lock.json
index d43b35b..44acbbb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2143,9 +2143,9 @@
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-      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-4.2.4.tgz",
-      "integrity": "sha512-EJUDT7nDVFDvaQgAo2G/PJvxmp1o/c6iXLbswsBbUFXi1Nr+AjA2cKmfbKDMjMvzEe75g3P6JkaDDAKk96A85A==",
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-5.3.2.tgz",
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@@ -3374,14 +3374,108 @@
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-      "resolved": "https://registry.npmjs.org/grunt-contrib-cssmin/-/grunt-contrib-cssmin-3.0.0.tgz",
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+      "resolved": "https://registry.npmjs.org/grunt-contrib-cssmin/-/grunt-contrib-cssmin-5.0.0.tgz",
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       "dev": true,
       "requires": {
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-        "clean-css": "~4.2.1",
-        "maxmin": "^2.1.0"
+        "chalk": "^4.1.2",
+        "clean-css": "^5.3.2",
+        "maxmin": "^3.0.0"
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+        "chalk": {
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
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+          "dev": true,
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+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
+          "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
+          "dev": true
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+        "figures": {
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+          "resolved": "https://registry.npmjs.org/figures/-/figures-3.2.0.tgz",
+          "integrity": "sha512-yaduQFRKLXYOGgEn6AZau90j3ggSOyiqXU0F9JZfeXYhNa+Jk4X+s45A2zg5jns87GAFa34BBm2kXw4XpNcbdg==",
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+          "resolved": "https://registry.npmjs.org/gzip-size/-/gzip-size-5.1.1.tgz",
+          "integrity": "sha512-FNHi6mmoHvs1mxZAds4PpdCS6QG8B4C1krxJsMutgxl5t3+GlRTzzI3NEkifXx2pVsOvJdOGSmIgDhQ55FwdPA==",
+          "dev": true,
+          "requires": {
+            "duplexer": "^0.1.1",
+            "pify": "^4.0.1"
+          }
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+        "has-flag": {
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+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
+          "integrity": "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==",
+          "dev": true
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+        "maxmin": {
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+          "resolved": "https://registry.npmjs.org/maxmin/-/maxmin-3.0.0.tgz",
+          "integrity": "sha512-wcahMInmGtg/7c6a75fr21Ch/Ks1Tb+Jtoan5Ft4bAI0ZvJqyOw8kkM7e7p8hDSzY805vmxwHT50KcjGwKyJ0g==",
+          "dev": true,
+          "requires": {
+            "chalk": "^4.1.0",
+            "figures": "^3.2.0",
+            "gzip-size": "^5.1.1",
+            "pretty-bytes": "^5.3.0"
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+          "dev": true
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+        "pretty-bytes": {
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+          "resolved": "https://registry.npmjs.org/pretty-bytes/-/pretty-bytes-5.6.0.tgz",
+          "integrity": "sha512-FFw039TmrBqFK8ma/7OL3sDz/VytdtJr044/QUJtH0wK9lb9jLq9tJyIxUwtQJHwar2BqtiA4iCWSwo9JLkzFg==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "7.2.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+          "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^4.0.0"
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     "grunt-contrib-uglify": {
diff --git a/package.json b/package.json
index 5a6166d..b5a856b 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "grunt": "1.5.3",
     "grunt-babel": "8.0.0",
     "grunt-contrib-copy": "0.8.2",
-    "grunt-contrib-cssmin": "3.0.0",
+    "grunt-contrib-cssmin": "5.0.0",
     "grunt-contrib-uglify": "4.0.1",
     "grunt-contrib-watch": "1.1.0",
     "grunt-sass": "*",