diff --git a/package.json b/package.json
index 7493a7f7..4693d532 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "eslint-plugin-prettier": "^3.1.4",
     "jest": "^25.4.0",
     "parcel-bundler": "^1.12.4",
-    "postcss": "^8.4.16",
+    "postcss": "^8.4.18",
     "postcss-cli": "^8.3.1",
     "postcss-import": "^14.0.0",
     "prettier": "^2.2.1",
diff --git a/yarn.lock b/yarn.lock
index 804fdddf..2ebf1b69 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10936,10 +10936,10 @@ postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.11, postcss@^7.0.14, postcss@^7.0.1
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@^8.4.14, postcss@^8.4.16:
-  version "8.4.17"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.17.tgz#f87863ec7cd353f81f7ab2dec5d67d861bbb1be5"
-  integrity sha512-UNxNOLQydcOFi41yHNMcKRZ39NeXlr8AxGuZJsdub8vIb12fHzcq37DTU/QtbI6WLxNg2gF9Z+8qtRwTj1UI1Q==
+postcss@^8.4.14, postcss@^8.4.18:
+  version "8.4.18"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.18.tgz#6d50046ea7d3d66a85e0e782074e7203bc7fbca2"
+  integrity sha512-Wi8mWhncLJm11GATDaQKobXSNEYGUHeQLiQqDFG1qQ5UTDPTEvKw0Xt5NsTpktGTwLps3ByrWsBrG0rB8YQ9oA==
   dependencies:
     nanoid "^3.3.4"
     picocolors "^1.0.0"