diff --git a/package-lock.json b/package-lock.json
index e338cd2bc96..489f71e47ef 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8585,9 +8585,9 @@
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     },
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-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA=="
+      "version": "3.3.4",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.4.tgz",
+      "integrity": "sha512-MqBkQh/OHTS2egovRtLk45wEyNXwF+cokD+1YPf9u5VfJiRdAiRwB2froX5Co9Rh20xs4siNPm8naNotSD6RBw=="
     },
     "napi-build-utils": {
       "version": "1.0.1",
@@ -9100,25 +9100,13 @@
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     },
     "postcss": {
-      "version": "8.2.10",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.10.tgz",
-      "integrity": "sha512-b/h7CPV7QEdrqIxtAf2j31U5ef05uBDuvoXv6L51Q4rcS1jdlXAVKJv+atCFdUXYl9dyTHGyoMzIepwowRJjFw==",
+      "version": "8.4.16",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.16.tgz",
+      "integrity": "sha512-ipHE1XBvKzm5xI7hiHCZJCSugxvsdq2mPnsq5+UF+VHCjiBvtDrlxJfMBToWaP9D5XlgNmcFGqoHmUn0EYEaRQ==",
       "requires": {
-        "colorette": "^1.2.2",
-        "nanoid": "^3.1.22",
-        "source-map": "^0.6.1"
-      },
-      "dependencies": {
-        "colorette": {
-          "version": "1.2.2",
-          "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
-          "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w=="
-        },
-        "source-map": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
-        }
+        "nanoid": "^3.3.4",
+        "picocolors": "^1.0.0",
+        "source-map-js": "^1.0.2"
       }
     },
     "postcss-selector-parser": {
@@ -10005,6 +9993,11 @@
         "amdefine": ">=0.0.4"
       }
     },
+    "source-map-js": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.2.tgz",
+      "integrity": "sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw=="
+    },
     "spdx-correct": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/spdx-correct/-/spdx-correct-3.1.1.tgz",
diff --git a/package.json b/package.json
index 8c2ecb5e2c4..09dbc29a1d8 100644
--- a/package.json
+++ b/package.json
@@ -137,7 +137,7 @@
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     "package-generator": "https://www.atom.io/api/packages/package-generator/versions/1.3.0/tarball",
     "pathwatcher": "^8.1.2",
-    "postcss": "8.2.10",
+    "postcss": "8.4.16",
     "postcss-selector-parser": "6.0.4",
     "prebuild-install": "6.0.0",
     "property-accessors": "^1.1.3",