diff --git a/package.json b/package.json
index f062889b35..590f549024 100644
--- a/package.json
+++ b/package.json
@@ -360,7 +360,7 @@
     "node-loader": "^1.0.3",
     "nodemon": "^2.0.14",
     "playwright": "^1.17.1",
-    "postcss": "^8.3.11",
+    "postcss": "^8.4.5",
     "postcss-loader": "4.3.0",
     "postinstall-postinstall": "^2.1.0",
     "progress-bar-webpack-plugin": "^2.1.0",
diff --git a/yarn.lock b/yarn.lock
index bab3877a8a..af2e16e0a6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11091,14 +11091,14 @@ postcss@^6.0.14, postcss@^6.0.2:
     source-map "^0.6.1"
     supports-color "^5.4.0"
 
-postcss@^8.1.6, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.3.0, postcss@^8.3.11:
-  version "8.3.11"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.3.11.tgz#c3beca7ea811cd5e1c4a3ec6d2e7599ef1f8f858"
-  integrity sha512-hCmlUAIlUiav8Xdqw3Io4LcpA1DOt7h3LSTAC4G6JGHFFaWzI6qvFt9oilvl8BmkbBRX1IhM90ZAmpk68zccQA==
+postcss@^8.1.6, postcss@^8.2.1, postcss@^8.2.15, postcss@^8.3.0, postcss@^8.4.5:
+  version "8.4.5"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.5.tgz#bae665764dfd4c6fcc24dc0fdf7e7aa00cc77f95"
+  integrity sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==
   dependencies:
     nanoid "^3.1.30"
     picocolors "^1.0.0"
-    source-map-js "^0.6.2"
+    source-map-js "^1.0.1"
 
 postinstall-postinstall@^2.1.0:
   version "2.1.0"
@@ -12699,10 +12699,10 @@ source-list-map@^2.0.0, source-list-map@^2.0.1:
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
   integrity sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==
 
-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-js@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.1.tgz#a1741c131e3c77d048252adfa24e23b908670caf"
+  integrity sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA==
 
 source-map-resolve@^0.5.0, source-map-resolve@^0.5.2:
   version "0.5.3"