diff --git a/package.json b/package.json
index 341edc7f69..70952d9e95 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "classnames": "^2.5.1",
     "gulp": "^5.0.1",
     "normalize.css": "^8.0.1",
-    "postcss": "^8.4.47",
+    "postcss": "^8.5.18",
     "preact": "^10.26.10",
     "rollup": "^4.59.0",
     "sass": "^1.93.2",
diff --git a/yarn.lock b/yarn.lock
index f12fa40384..d549034815 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7274,7 +7274,7 @@ __metadata:
     navigation-api-types: ^0.5.1
     normalize.css: ^8.0.1
     playwright: ^1.55.1
-    postcss: ^8.4.47
+    postcss: ^8.5.18
     preact: ^10.26.10
     prettier: 3.4.2
     rollup: ^4.59.0
@@ -7653,7 +7653,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.11, nanoid@npm:^3.3.8":
+"nanoid@npm:^3.3.11":
   version: 3.3.11
   resolution: "nanoid@npm:3.3.11"
   bin:
@@ -8219,25 +8219,25 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.4.47":
-  version: 8.5.3
-  resolution: "postcss@npm:8.5.3"
+"postcss@npm:^8.5.15":
+  version: 8.5.16
+  resolution: "postcss@npm:8.5.16"
   dependencies:
-    nanoid: ^3.3.8
+    nanoid: ^3.3.12
     picocolors: ^1.1.1
     source-map-js: ^1.2.1
-  checksum: da574620eb84ff60e65e1d8fc6bd5ad87a19101a23d0aba113c653434161543918229a0f673d89efb3b6d4906287eb04b957310dbcf4cbebacad9d1312711461
+  checksum: 636fd45f028f487d4873d1d30a541b910e2477d77e5ca368e9f8535fad12b2c20bfc508516fd35258e33214d51dd84b1e089539b9d78737aed528abb1db036a5
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.5.15":
-  version: 8.5.16
-  resolution: "postcss@npm:8.5.16"
+"postcss@npm:^8.5.18":
+  version: 8.5.18
+  resolution: "postcss@npm:8.5.18"
   dependencies:
     nanoid: ^3.3.12
     picocolors: ^1.1.1
     source-map-js: ^1.2.1
-  checksum: 636fd45f028f487d4873d1d30a541b910e2477d77e5ca368e9f8535fad12b2c20bfc508516fd35258e33214d51dd84b1e089539b9d78737aed528abb1db036a5
+  checksum: 924b71b066ada1909b741970b53529b95a6589106302a154cd14b2fae0c8186144be2bb1e0c45e0f3e530474cf92afa01d790afa8b71dcd60c98ca8ee42f66c1
   languageName: node
   linkType: hard