diff --git a/packages/lumx-core/package.json b/packages/lumx-core/package.json
index 27d4be03c..d022a835b 100644
--- a/packages/lumx-core/package.json
+++ b/packages/lumx-core/package.json
@@ -79,7 +79,7 @@
         "autoprefixer": "^9.7.4",
         "glob": "^7.1.6",
         "jsdom": "^27.2.0",
-        "postcss": "^8.5.6",
+        "postcss": "^8.5.11",
         "rollup": "^4.59.0",
         "rollup-plugin-cleaner": "^1.0.0",
         "rollup-plugin-copy": "^3.5.0",
diff --git a/packages/site-demo/package.json b/packages/site-demo/package.json
index 50e119d20..8727bb55a 100644
--- a/packages/site-demo/package.json
+++ b/packages/site-demo/package.json
@@ -46,7 +46,7 @@
         "highlight-words-core": "^1.2.2",
         "lodash": "4.18.1",
         "lunr": "^2.3.9",
-        "postcss": "^8.5.6",
+        "postcss": "^8.5.11",
         "prism-react-renderer": "^1.3.5",
         "prismjs": "^1.30.0",
         "raw-loader": "^4.0.2",
diff --git a/yarn.lock b/yarn.lock
index bf14aa6f0..71d58a8e4 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2749,7 +2749,7 @@ __metadata:
     glob: "npm:^7.1.6"
     jsdom: "npm:^27.2.0"
     lodash: "npm:4.18.1"
-    postcss: "npm:^8.5.6"
+    postcss: "npm:^8.5.11"
     rollup: "npm:^4.59.0"
     rollup-plugin-cleaner: "npm:^1.0.0"
     rollup-plugin-copy: "npm:^3.5.0"
@@ -15666,7 +15666,7 @@ __metadata:
     htmlparser2: "npm:^3.10.1"
     lodash: "npm:4.18.1"
     lunr: "npm:^2.3.9"
-    postcss: "npm:^8.5.6"
+    postcss: "npm:^8.5.11"
     prism-react-renderer: "npm:^1.3.5"
     prismjs: "npm:^1.30.0"
     raw-loader: "npm:^4.0.2"
@@ -17256,6 +17256,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"nanoid@npm:^3.3.12":
+  version: 3.3.12
+  resolution: "nanoid@npm:3.3.12"
+  bin:
+    nanoid: bin/nanoid.cjs
+  checksum: 10/6eec280694e2088d18fb802b1e3bfc4578e27b665b7ecfbe36c7356612fea2f814277056e671e2a1529dff551588a652efdc0bfa39f8a3185bc2247be311872e
+  languageName: node
+  linkType: hard
+
 "napi-build-utils@npm:^2.0.0":
   version: 2.0.0
   resolution: "napi-build-utils@npm:2.0.0"
@@ -19082,6 +19091,17 @@ __metadata:
   languageName: node
   linkType: hard
 
+"postcss@npm:^8.5.11":
+  version: 8.5.15
+  resolution: "postcss@npm:8.5.15"
+  dependencies:
+    nanoid: "npm:^3.3.12"
+    picocolors: "npm:^1.1.1"
+    source-map-js: "npm:^1.2.1"
+  checksum: 10/d02ad19eb1e0fa53a1229ee6d53807eb88f903f2b9a8cac66993367f3ac7dd3b97238c783a54ccbf4145f82f6ca9a5cbd58f089846285d759c8a3259fbea8318
+  languageName: node
+  linkType: hard
+
 "prebuild-install@npm:^7.1.1":
   version: 7.1.3
   resolution: "prebuild-install@npm:7.1.3"