diff --git a/package-lock.json b/package-lock.json
index 1c6648ee5..ff81d50d0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13446,6 +13446,11 @@
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       "optional": true
     },
+    "nanoid": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
+      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA=="
+    },
     "nanomatch": {
       "version": "1.2.13",
       "resolved": "https://registry.npmjs.org/nanomatch/-/nanomatch-1.2.13.tgz",
@@ -14621,47 +14626,19 @@
       "integrity": "sha1-AerA/jta9xoqbAL+q7jB/vfgDqs="
     },
     "postcss": {
-      "version": "5.2.17",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.17.tgz",
-      "integrity": "sha1-z09Ze4ZNZcikkrLqvp1wbIecOIs=",
+      "version": "8.2.13",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.13.tgz",
+      "integrity": "sha512-FCE5xLH+hjbzRdpbRb1IMCvPv9yZx2QnDarBEYSN0N0HYk+TcXsEhwdFcFb+SRWOKzKGErhIEbBK2ogyLdTtfQ==",
       "requires": {
-        "chalk": "^1.1.3",
-        "js-base64": "^2.1.9",
-        "source-map": "^0.5.6",
-        "supports-color": "^3.2.3"
+        "colorette": "^1.2.2",
+        "nanoid": "^3.1.22",
+        "source-map": "^0.6.1"
       },
       "dependencies": {
-        "chalk": {
-          "version": "1.1.3",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
-          "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
-          "requires": {
-            "ansi-styles": "^2.2.1",
-            "escape-string-regexp": "^1.0.2",
-            "has-ansi": "^2.0.0",
-            "strip-ansi": "^3.0.0",
-            "supports-color": "^2.0.0"
-          },
-          "dependencies": {
-            "supports-color": {
-              "version": "2.0.0",
-              "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
-              "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
-            }
-          }
-        },
-        "has-flag": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
-          "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo="
-        },
-        "supports-color": {
-          "version": "3.2.3",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
-          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
-          "requires": {
-            "has-flag": "^1.0.0"
-          }
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
         }
       }
     },
diff --git a/package.json b/package.json
index 0bcb1a886..ac40ac475 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
     "laggard": "^2.0.1",
     "lazysizes": "^5.2.1",
     "ldclient-js": "^2.10.2",
-    "postcss": "^5.2.17",
+    "postcss": "^8.2.13",
     "postcss-browser-reporter": "^0.6.0",
     "postcss-cachebuster": "^0.1.6",
     "postcss-cssnext": "^3.1.0",