diff --git a/package.json b/package.json
index 9e7ddfc8..88a88981 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
 		"lint-staged": "^12.1.2",
 		"mocha": "^9.1.3",
 		"node-html-parser": "^5.1.0",
-		"postcss": "^8.3.11",
+		"postcss": "^8.4.1",
 		"postcss-load-config": "^3.1.0",
 		"prettier": "~2.4.1",
 		"prettier-plugin-svelte": "^2.4.0",
diff --git a/yarn.lock b/yarn.lock
index 88f66893..c98754aa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3839,14 +3839,14 @@ postcss@^7.0.0, postcss@^7.0.14, postcss@^7.0.32, postcss@^7.0.5, postcss@^7.0.6
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@^8.1.6, postcss@^8.2.1, postcss@^8.3.0, postcss@^8.3.11, postcss@^8.3.8:
-  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@^8.3.0, postcss@^8.3.8, postcss@^8.4.1:
+  version "8.4.1"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.1.tgz#73051f825509ad1a716ef500108001bf3d1fa8f7"
+  integrity sha512-WqLs/TTzXdG+/A4ZOOK9WDZiikrRaiA+eoEb/jz2DT9KUhMNHgP7yKPO8vwi62ZCsb703Gwb7BMZwDzI54Y2Ag==
   dependencies:
     nanoid "^3.1.30"
     picocolors "^1.0.0"
-    source-map-js "^0.6.2"
+    source-map-js "^1.0.1"
 
 prelude-ls@^1.2.1:
   version "1.2.1"
@@ -4272,10 +4272,10 @@ sorcery@^0.10.0:
     sander "^0.5.0"
     sourcemap-codec "^1.3.0"
 
-source-map-js@^0.6.2:
-  version "0.6.2"
-  resolved "https://registry.npmjs.org/source-map-js/-/source-map-js-0.6.2.tgz"
-  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@^0.6.1:
   version "0.6.1"