diff --git a/package-lock.json b/package-lock.json
index 239cad0d1a8..b6d15ed8e27 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2403,9 +2403,9 @@
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-      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.1.tgz",
-      "integrity": "sha512-puCDz0CzydiSYOrnXpz/PKd69zRrribezjtE9yd4zvytoRc8+RY/KJPvtPFKZS3E3wP6neGyMe0vOTlHO5L3Pw=="
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
+      "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w=="
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@@ -4251,14 +4251,6 @@
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       "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
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-    "isobject": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/isobject/-/isobject-2.1.0.tgz",
-      "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
-      "requires": {
-        "isarray": "1.0.0"
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       "resolved": "https://registry.npmjs.org/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz",
@@ -4916,15 +4908,6 @@
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-    "line-column": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/line-column/-/line-column-1.0.2.tgz",
-      "integrity": "sha1-0lryk2tvSEkXKzEuR5LR2Ye8NKI=",
-      "requires": {
-        "isarray": "^1.0.0",
-        "isobject": "^2.0.0"
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     "line-ending-selector": {
       "version": "file:packages/line-ending-selector",
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@@ -5567,9 +5550,9 @@
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     },
     "nanoid": {
-      "version": "3.1.12",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.12.tgz",
-      "integrity": "sha512-1qstj9z5+x491jfiC4Nelk+f8XBad7LN20PmyWINJEMRSf3wcAjAWysw1qaA8z6NSKe2sjq1hRSDpBH5paCb6A=="
+      "version": "3.1.23",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.23.tgz",
+      "integrity": "sha512-FiB0kzdP0FFVGDKlRLEQ1BgDzU87dy5NnzjeW9YZNt+/c3+q82EQDUwniSAUxp/F0gFNI1ZhKU1FqYsMuqZVnw=="
     },
     "napi-build-utils": {
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@@ -6084,13 +6067,12 @@
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     "postcss": {
-      "version": "8.1.1",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.1.1.tgz",
-      "integrity": "sha512-9DGLSsjooH3kSNjTZUOt2eIj2ZTW0VI2PZ/3My+8TC7KIbH2OKwUlISfDsf63EP4aiRUt3XkEWMWvyJHvJelEg==",
+      "version": "8.2.10",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.10.tgz",
+      "integrity": "sha512-b/h7CPV7QEdrqIxtAf2j31U5ef05uBDuvoXv6L51Q4rcS1jdlXAVKJv+atCFdUXYl9dyTHGyoMzIepwowRJjFw==",
       "requires": {
-        "colorette": "^1.2.1",
-        "line-column": "^1.0.2",
-        "nanoid": "^3.1.12",
+        "colorette": "^1.2.2",
+        "nanoid": "^3.1.22",
         "source-map": "^0.6.1"
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diff --git a/package.json b/package.json
index d35c90eb6f5..e18b9be1758 100644
--- a/package.json
+++ b/package.json
@@ -135,7 +135,7 @@
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     "package-generator": "https://www.atom.io/api/packages/package-generator/versions/1.3.0/tarball",
     "pathwatcher": "8.1.0",
-    "postcss": "8.1.1",
+    "postcss": "8.2.10",
     "postcss-selector-parser": "6.0.4",
     "prebuild-install": "5.3.5",
     "property-accessors": "^1.1.3",