diff --git a/package-lock.json b/package-lock.json
index 74d06003681..2b8d785c67a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "atom",
-  "version": "1.60.0-dev",
+  "version": "1.61.0-dev",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -5762,9 +5762,9 @@
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     },
     "nanoid": {
-      "version": "3.1.22",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.22.tgz",
-      "integrity": "sha512-/2ZUaJX2ANuLtTvqTlgqBQNJoQO398KyJgZloL0PZkC0dpysjncRUPsFe3DUPzz/y3h+u7C46np8RMuvF3jsSQ=="
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.6.tgz",
+      "integrity": "sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA=="
     },
     "napi-build-utils": {
       "version": "1.0.1",
@@ -6256,6 +6256,11 @@
       "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
       "integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
     },
+    "picocolors": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.0.tgz",
+      "integrity": "sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ=="
+    },
     "plist": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/plist/-/plist-3.0.1.tgz",
@@ -6267,25 +6272,13 @@
       }
     },
     "postcss": {
-      "version": "8.2.10",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.10.tgz",
-      "integrity": "sha512-b/h7CPV7QEdrqIxtAf2j31U5ef05uBDuvoXv6L51Q4rcS1jdlXAVKJv+atCFdUXYl9dyTHGyoMzIepwowRJjFw==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "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": "^3.3.6",
+        "picocolors": "^1.0.0",
+        "source-map-js": "^1.0.2"
       }
     },
     "postcss-selector-parser": {
@@ -7252,6 +7245,11 @@
         "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=="
+    },
     "source-map-support": {
       "version": "0.2.10",
       "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.2.10.tgz",
diff --git a/package.json b/package.json
index 6371a0bfbd0..929fbf76ecb 100644
--- a/package.json
+++ b/package.json
@@ -136,7 +136,7 @@
     "open-on-github": "https://www.atom.io/api/packages/open-on-github/versions/1.3.2/tarball",
     "package-generator": "https://www.atom.io/api/packages/package-generator/versions/1.3.0/tarball",
     "pathwatcher": "^8.1.2",
-    "postcss": "8.2.10",
+    "postcss": "8.4.31",
     "postcss-selector-parser": "6.0.4",
     "prebuild-install": "6.0.0",
     "property-accessors": "^1.1.3",