diff --git a/package-lock.json b/package-lock.json
index 3678b6c..a2c1c57 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8156,12 +8156,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -8176,17 +8178,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -8303,7 +8308,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -8315,6 +8321,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -8329,6 +8336,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -8336,12 +8344,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -8360,6 +8370,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -8440,7 +8451,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -8452,6 +8464,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -8573,6 +8586,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -13338,6 +13352,17 @@
         "postcss-replace-overflow-wrap": "^2.0.0",
         "postcss-selector-matches": "^3.0.1",
         "postcss-selector-not": "^3.0.1"
+      },
+      "dependencies": {
+        "postcss-media-minmax": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/postcss-media-minmax/-/postcss-media-minmax-3.0.0.tgz",
+          "integrity": "sha1-Z1JWA3pD70C8Twdgv9BtTcadSNI=",
+          "dev": true,
+          "requires": {
+            "postcss": "^6.0.1"
+          }
+        }
       }
     },
     "postcss-custom-media": {
@@ -13897,12 +13922,71 @@
       }
     },
     "postcss-media-minmax": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/postcss-media-minmax/-/postcss-media-minmax-3.0.0.tgz",
-      "integrity": "sha1-Z1JWA3pD70C8Twdgv9BtTcadSNI=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/postcss-media-minmax/-/postcss-media-minmax-4.0.0.tgz",
+      "integrity": "sha512-fo9moya6qyxsjbFAYl97qKO9gyre3qvbMnkOZeZwlsW6XYFsvs2DMGDlchVLfAd8LHPZDxivu/+qW2SMQeTHBw==",
       "dev": true,
       "requires": {
-        "postcss": "^6.0.1"
+        "postcss": "^7.0.2"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          },
+          "dependencies": {
+            "supports-color": {
+              "version": "5.5.0",
+              "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+              "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+              "dev": true,
+              "requires": {
+                "has-flag": "^3.0.0"
+              }
+            }
+          }
+        },
+        "postcss": {
+          "version": "7.0.8",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.8.tgz",
+          "integrity": "sha512-WudsIzuTKRw9IInRTPBgVXJ7DKR26HT09Rxp0g3w0Fqh3TUtYICcUmvC0xURj04o3vdcDtnjCAUCECg/p341iQ==",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.4.2",
+            "source-map": "^0.6.1",
+            "supports-color": "^6.0.0"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.0.0.tgz",
+          "integrity": "sha512-on9Kwidc1IUQo+bQdhi8+Tijpo0e1SS6RoGo2guUwn5vdaxw8RXOF9Vb2ws+ihWOmh4JnCJOvaziZWP1VABaLg==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
       }
     },
     "postcss-media-query-parser": {
diff --git a/package.json b/package.json
index 93b1b02..2a9fd63 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
     "postcss-color-function": "4.0.1",
     "postcss-cssnext": "3.1.0",
     "postcss-import": "11.1.0",
-    "postcss-media-minmax": "3.0.0",
+    "postcss-media-minmax": "4.0.0",
     "rimraf": "2.6.2",
     "rucksack-css": "1.0.2",
     "sass-loader": "^7.1.0",