diff --git a/package.json b/package.json
index 0e1177f90..8f8dfa6d6 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "mdast-util-to-string": "^1.1.0",
     "metro-cache": "0.72.2",
     "npm-run-all": "^4.1.5",
-    "postcss": "^8.5.10",
+    "postcss": "^8.5.18",
     "postcss-flexbugs-fixes": "4.2.1",
     "postcss-preset-env": "^6.7.0",
     "prettier": "^2.5.1",
diff --git a/yarn.lock b/yarn.lock
index 3ce8cfc5c..3a94eb108 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5959,10 +5959,10 @@ mz@^2.7.0:
     object-assign "^4.0.1"
     thenify-all "^1.0.0"
 
-nanoid@^3.3.11, nanoid@^3.3.6:
-  version "3.3.11"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.11.tgz#4f4f112cefbe303202f2199838128936266d185b"
-  integrity sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==
+nanoid@^3.3.12, nanoid@^3.3.6:
+  version "3.3.16"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.16.tgz#a04d8ec4b1f10009d2d533947aefe4293737816c"
+  integrity sha512-bzlKTyNJ7+LdGIIwy8ijFpIqEQIvafahV7eYykJ8Cvh42EdJeODoJ6gUJXpQJvej1BddH8OqTXZNE/KfbWAu8Q==
 
 natural-compare@^1.4.0:
   version "1.4.0"
@@ -6816,12 +6816,12 @@ postcss@^7.0.14, postcss@^7.0.17, postcss@^7.0.2, postcss@^7.0.26, postcss@^7.0.
     picocolors "^0.2.1"
     source-map "^0.6.1"
 
-postcss@^8.4.23, postcss@^8.5.10:
-  version "8.5.10"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.10.tgz#8992d8c30acf3f12169e7c09514a12fed7e48356"
-  integrity sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ==
+postcss@^8.4.23, postcss@^8.5.18:
+  version "8.5.18"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.18.tgz#8717e5a33a3b15fe8a538d2431a1e1bbbfb07614"
+  integrity sha512-xdB1oSLHbz1vRWgCDalrCqEFTWzFlhqFC5tIHLMOSUIjhm3XXQ1qrFy8S/ESr1JYRRXqM3c1QFiMZUJdUTqyMQ==
   dependencies:
-    nanoid "^3.3.11"
+    nanoid "^3.3.12"
     picocolors "^1.1.1"
     source-map-js "^1.2.1"