diff --git a/package-lock.json b/package-lock.json
index fb0de5e5..15dd5884 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -274,6 +274,35 @@
         "num2fraction": "^1.2.2",
         "postcss": "^5.2.16",
         "postcss-value-parser": "^3.2.3"
+      },
+      "dependencies": {
+        "has-flag": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
+          "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
+          "dev": true
+        },
+        "postcss": {
+          "version": "5.2.18",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.18.tgz",
+          "integrity": "sha512-zrUjRRe1bpXKsX1qAJNJjqZViErVuyEkMTRrwu4ud4sbTtIBRmtaYDrHmcGgmrbsW3MHfmtIf+vJumgQn+PrXg==",
+          "dev": true,
+          "requires": {
+            "chalk": "^1.1.3",
+            "js-base64": "^2.1.9",
+            "source-map": "^0.5.6",
+            "supports-color": "^3.2.3"
+          }
+        },
+        "supports-color": {
+          "version": "3.2.3",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
+          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+          "dev": true,
+          "requires": {
+            "has-flag": "^1.0.0"
+          }
+        }
       }
     },
     "aws-sign2": {
@@ -1251,6 +1280,21 @@
       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
       "dev": true
     },
+    "color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dev": true,
+      "requires": {
+        "color-name": "1.1.3"
+      }
+    },
+    "color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+      "dev": true
+    },
     "combine-source-map": {
       "version": "0.7.2",
       "resolved": "https://registry.npmjs.org/combine-source-map/-/combine-source-map-0.7.2.tgz",
@@ -3261,9 +3305,9 @@
       }
     },
     "has-flag": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
-      "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
       "dev": true
     },
     "has-unicode": {
@@ -4542,15 +4586,53 @@
       "dev": true
     },
     "postcss": {
-      "version": "5.2.18",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.18.tgz",
-      "integrity": "sha512-zrUjRRe1bpXKsX1qAJNJjqZViErVuyEkMTRrwu4ud4sbTtIBRmtaYDrHmcGgmrbsW3MHfmtIf+vJumgQn+PrXg==",
+      "version": "7.0.36",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.36.tgz",
+      "integrity": "sha512-BebJSIUMwJHRH0HAQoxN4u1CN86glsrwsW0q7T+/m44eXOUAxSNdHRkNZPYz5vVUbg17hFgOQDE7fZk7li3pZw==",
       "dev": true,
       "requires": {
-        "chalk": "^1.1.3",
-        "js-base64": "^2.1.9",
-        "source-map": "^0.5.6",
-        "supports-color": "^3.2.3"
+        "chalk": "^2.4.2",
+        "source-map": "^0.6.1",
+        "supports-color": "^6.1.0"
+      },
+      "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"
+              }
+            }
+          }
+        },
+        "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
+        }
       }
     },
     "postcss-cli": {
@@ -4602,6 +4684,12 @@
             "pinkie-promise": "^2.0.0"
           }
         },
+        "has-flag": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
+          "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo=",
+          "dev": true
+        },
         "load-json-file": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
@@ -4626,6 +4714,18 @@
             "pinkie-promise": "^2.0.0"
           }
         },
+        "postcss": {
+          "version": "5.2.18",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.18.tgz",
+          "integrity": "sha512-zrUjRRe1bpXKsX1qAJNJjqZViErVuyEkMTRrwu4ud4sbTtIBRmtaYDrHmcGgmrbsW3MHfmtIf+vJumgQn+PrXg==",
+          "dev": true,
+          "requires": {
+            "chalk": "^1.1.3",
+            "js-base64": "^2.1.9",
+            "source-map": "^0.5.6",
+            "supports-color": "^3.2.3"
+          }
+        },
         "read-pkg": {
           "version": "1.1.0",
           "resolved": "https://registry.npmjs.org/read-pkg/-/read-pkg-1.1.0.tgz",
@@ -4656,6 +4756,15 @@
             "is-utf8": "^0.2.0"
           }
         },
+        "supports-color": {
+          "version": "3.2.3",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
+          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+          "dev": true,
+          "requires": {
+            "has-flag": "^1.0.0"
+          }
+        },
         "yargs": {
           "version": "4.8.1",
           "resolved": "https://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz",
@@ -5477,12 +5586,12 @@
       }
     },
     "supports-color": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
-      "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
+      "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
       "dev": true,
       "requires": {
-        "has-flag": "^1.0.0"
+        "has-flag": "^3.0.0"
       }
     },
     "syntax-error": {
diff --git a/package.json b/package.json
index 5e262cca..56a5019d 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "eslint-config-airbnb-base": "^11.0.1",
     "eslint-plugin-import": "^2.2.0",
     "node-sass": "^4.14.0",
-    "postcss": "^5.2.10",
+    "postcss": "^7.0.36",
     "postcss-cli": "^2.6.0"
   },
   "dependencies": {