diff --git a/package.json b/package.json
index 4cf10cb10..7697e112c 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "outdent": "0.8.0",
     "parse-srcset": "ikatyang/parse-srcset#54eb9c1cb21db5c62b4d0e275d7249516df6f0ee",
     "please-upgrade-node": "3.2.0",
-    "postcss": "8.2.7",
+    "postcss": "8.3.6",
     "postcss-less": "5.0.0",
     "postcss-media-query-parser": "0.2.3",
     "postcss-scss": "4.0.0",
diff --git a/yarn.lock b/yarn.lock
index fdcf60239..798b56760 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4760,7 +4760,7 @@ n-readlines@1.0.1:
   resolved "https://registry.yarnpkg.com/n-readlines/-/n-readlines-1.0.1.tgz#bbb7364d38bc31a170a199f986fcacfa76b95f6e"
   integrity sha512-z4SyAIVgMy7CkgsoNw7YVz40v0g4+WWvvqy8+ZdHrCtgevcEO758WQyrYcw3XPxcLxF+//RszTz/rO48nzD0wQ==
 
-nanoid@^3.1.20:
+nanoid@^3.1.23:
   version "3.1.25"
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.25.tgz#09ca32747c0e543f0e1814b7d3793477f9c8e152"
   integrity sha512-rdwtIXaXCLFAQbnfqDRnI6jaRHp9fTcYBjtFKE8eezcZ7LuLjhUaQGNeMXf1HmRoCH32CLz6XwX0TtxEOS/A3Q==
@@ -5204,14 +5204,14 @@ postcss-values-parser@2.0.1:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss@8.2.7:
-  version "8.2.7"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.2.7.tgz#48ed8d88b4de10afa0dfd1c3f840aa57b55c4d47"
-  integrity sha512-DsVLH3xJzut+VT+rYr0mtvOtpTjSyqDwPf5EZWXcb0uAKfitGpTY9Ec+afi2+TgdN8rWS9Cs88UDYehKo/RvOw==
+postcss@8.3.6:
+  version "8.3.6"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.6.tgz#2730dd76a97969f37f53b9a6096197be311cc4ea"
+  integrity sha512-wG1cc/JhRgdqB6WHEuyLTedf3KIRuD0hG6ldkFEZNCjRxiC+3i6kkWUUbiJQayP28iwG35cEmAbe98585BYV0A==
   dependencies:
     colorette "^1.2.2"
-    nanoid "^3.1.20"
-    source-map "^0.6.1"
+    nanoid "^3.1.23"
+    source-map-js "^0.6.2"
 
 prelude-ls@^1.2.1:
   version "1.2.1"
@@ -5744,6 +5744,11 @@ snapshot-diff@0.9.0:
     jest-snapshot "^27.0.4"
     pretty-format "^27.0.2"
 
+source-map-js@^0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-0.6.2.tgz#0bb5de631b41cfbda6cfba8bd05a80efdfd2385e"
+  integrity sha512-/3GptzWzu0+0MBQFrDKzw/DvvMTUORvgY6k6jd/VS6iCR4RDTKWH6v6WPwQoUO8667uQEf9Oe38DxAYWY5F/Ug==
+
 source-map-support@^0.5.6, source-map-support@~0.5.19:
   version "0.5.19"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.19.tgz#a98b62f86dcaf4f67399648c085291ab9e8fed61"