diff --git a/packages/app/package.json b/packages/app/package.json
index ef572edc..3edc1ec7 100644
--- a/packages/app/package.json
+++ b/packages/app/package.json
@@ -83,7 +83,7 @@
     "eslint-plugin-react-hooks": "4.6.0",
     "eslint-plugin-unicorn": "45.0.2",
     "npm-run-all": "4.1.5",
-    "postcss": "8.4.20",
+    "postcss": "8.4.21",
     "postcss-scss": "4.0.6",
     "prettier": "2.8.1",
     "source-map-loader": "4.0.1",
diff --git a/packages/core/package.json b/packages/core/package.json
index 0fbe0dde..f7a4cdac 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -241,7 +241,7 @@
     "ncp": "2.0.0",
     "node-fetch": "3.3.0",
     "npm-run-all": "4.1.5",
-    "postcss": "8.4.20",
+    "postcss": "8.4.21",
     "postcss-scss": "4.0.6",
     "prettier": "2.8.1",
     "process": "0.11.10",
diff --git a/yarn.lock b/yarn.lock
index 1431bcd4..c5965b28 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12903,7 +12903,16 @@ postcss@8.4.14:
     picocolors "^1.0.0"
     source-map-js "^1.0.2"
 
-postcss@8.4.20, postcss@^8.4.19:
+postcss@8.4.21:
+  version "8.4.21"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.21.tgz#c639b719a57efc3187b13a1d765675485f4134f4"
+  integrity sha512-tP7u/Sn/dVxK2NnruI4H9BG+x+Wxz6oeZ1cJ8P6G/PZY0IKk4k/63TDsQf2kQq3+qoJeLm2kIBUNlZe3zgb4Zg==
+  dependencies:
+    nanoid "^3.3.4"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
+
+postcss@^8.4.19:
   version "8.4.20"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.20.tgz#64c52f509644cecad8567e949f4081d98349dc56"
   integrity sha512-6Q04AXR1212bXr5fh03u8aAwbLxAQNGQ/Q1LNa0VfOI06ZAlhPHtQvE4OIdpj4kLThXilalPnmDSOD65DcHt+g==