diff --git a/apps/storybook/package.json b/apps/storybook/package.json
index 25c7c5cce..06ad4d36d 100644
--- a/apps/storybook/package.json
+++ b/apps/storybook/package.json
@@ -52,7 +52,7 @@
     "i18next-browser-languagedetector": "^8.2.1",
     "i18next-http-backend": "^3.0.4",
     "identity-obj-proxy": "^3.0.0",
-    "postcss": "8.5.10",
+    "postcss": "8.5.18",
     "postcss-loader": "8.2.1",
     "postcss-preset-env": "11.2.0",
     "react": "19.2.4",
diff --git a/package-lock.json b/package-lock.json
index 92469f091..a41a3fc91 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -184,7 +184,7 @@
         "i18next-browser-languagedetector": "^8.2.1",
         "i18next-http-backend": "^3.0.4",
         "identity-obj-proxy": "^3.0.0",
-        "postcss": "8.5.10",
+        "postcss": "^8.5.18",
         "postcss-loader": "8.2.1",
         "postcss-preset-env": "11.2.0",
         "react": "19.2.4",
@@ -27456,9 +27456,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.10",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.10.tgz",
-      "integrity": "sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ==",
+      "version": "8.5.18",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.18.tgz",
+      "integrity": "sha512-xdB1oSLHbz1vRWgCDalrCqEFTWzFlhqFC5tIHLMOSUIjhm3XXQ1qrFy8S/ESr1JYRRXqM3c1QFiMZUJdUTqyMQ==",
       "funding": [
         {
           "type": "opencollective",
@@ -27475,7 +27475,7 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "nanoid": "^3.3.11",
+        "nanoid": "^3.3.12",
         "picocolors": "^1.1.1",
         "source-map-js": "^1.2.1"
       },
@@ -28814,9 +28814,9 @@
       "license": "MIT"
     },
     "node_modules/postcss/node_modules/nanoid": {
-      "version": "3.3.11",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
-      "integrity": "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==",
+      "version": "3.3.16",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.16.tgz",
+      "integrity": "sha512-bzlKTyNJ7+LdGIIwy8ijFpIqEQIvafahV7eYykJ8Cvh42EdJeODoJ6gUJXpQJvej1BddH8OqTXZNE/KfbWAu8Q==",
       "funding": [
         {
           "type": "github",
@@ -35001,7 +35001,7 @@
       "devDependencies": {
         "@types/node": "24.12.0",
         "autoprefixer": "10.4.27",
-        "postcss": "8.5.10",
+        "postcss": "^8.5.18",
         "tsx": "^4.21.0",
         "typescript": "5.9.3"
       },
@@ -35083,7 +35083,7 @@
         "jest-axe": "10.0.0",
         "jest-environment-jsdom": "^30.3.0",
         "mini-css-extract-plugin": "2.10.2",
-        "postcss": "8.5.10",
+        "postcss": "^8.5.18",
         "postcss-loader": "8.2.1",
         "postcss-preset-env": "11.2.0",
         "storybook": "^10.3.4",
diff --git a/packages/css/package.json b/packages/css/package.json
index e06ac3cdb..24bd27851 100644
--- a/packages/css/package.json
+++ b/packages/css/package.json
@@ -32,7 +32,7 @@
   "devDependencies": {
     "@types/node": "24.12.0",
     "autoprefixer": "10.4.27",
-    "postcss": "8.5.10",
+    "postcss": "8.5.18",
     "tsx": "^4.21.0",
     "typescript": "5.9.3"
   },
diff --git a/packages/react/package.json b/packages/react/package.json
index 813bfa7c1..97b348d45 100644
--- a/packages/react/package.json
+++ b/packages/react/package.json
@@ -95,7 +95,7 @@
     "jest-axe": "10.0.0",
     "jest-environment-jsdom": "^30.3.0",
     "mini-css-extract-plugin": "2.10.2",
-    "postcss": "8.5.10",
+    "postcss": "8.5.18",
     "postcss-loader": "8.2.1",
     "postcss-preset-env": "11.2.0",
     "storybook": "^10.3.4",