diff --git a/package.json b/package.json
index 5f2fb8c8..7517edcd 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "@tailwindcss/postcss": "^4.1.17",
     "classnames": "^2.5.1",
     "gulp": "^5.0.0",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.10",
     "preact": "^10.26.10",
     "rollup": "^4.55.2",
     "sass": "^1.77.4",
diff --git a/yarn.lock b/yarn.lock
index f40da694..f63ba7a9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7870,7 +7870,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.4.41, postcss@npm:^8.5.6":
+"postcss@npm:^8.4.41":
   version: 8.5.6
   resolution: "postcss@npm:8.5.6"
   dependencies:
@@ -7881,6 +7881,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"postcss@npm:^8.5.10":
+  version: 8.5.10
+  resolution: "postcss@npm:8.5.10"
+  dependencies:
+    nanoid: ^3.3.11
+    picocolors: ^1.1.1
+    source-map-js: ^1.2.1
+  checksum: 9af9cd7f2f0d4b8456f6710e48d586328433509b695911fda942c24ac4db4e62c6fed8c6c6d8c8258326285f669494c2c36a4ff84aa160f0586eb545e5258bf5
+  languageName: node
+  linkType: hard
+
 "postcss@npm:^8.5.15":
   version: 8.5.15
   resolution: "postcss@npm:8.5.15"
@@ -9464,7 +9475,7 @@ __metadata:
     globals: ^16.0.0
     gulp: ^5.0.0
     playwright: ^1.55.1
-    postcss: ^8.5.6
+    postcss: ^8.5.10
     preact: ^10.26.10
     prettier: ^3.6.2
     rollup: ^4.55.2