diff --git a/package-lock.json b/package-lock.json
index ce85a04de5..53fd189835 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -59,7 +59,7 @@
         "mini-css-extract-plugin": "2.10.0",
         "minimatch": "10.2.5",
         "pdfobject": "2.3.0",
-        "postcss": "8.5.6",
+        "postcss": "8.5.9",
         "postcss-loader": "8.2.1",
         "postcss-nesting": "14.0.0",
         "pretty-ms": "9.0.0",
@@ -5176,34 +5176,6 @@
         "@jridgewell/sourcemap-codec": "^1.5.5"
       }
     },
-    "node_modules/@vue/compiler-sfc/node_modules/postcss": {
-      "version": "8.5.8",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.8.tgz",
-      "integrity": "sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==",
-      "funding": [
-        {
-          "type": "opencollective",
-          "url": "https://opencollective.com/postcss/"
-        },
-        {
-          "type": "tidelift",
-          "url": "https://tidelift.com/funding/github/npm/postcss"
-        },
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/ai"
-        }
-      ],
-      "license": "MIT",
-      "dependencies": {
-        "nanoid": "^3.3.11",
-        "picocolors": "^1.1.1",
-        "source-map-js": "^1.2.1"
-      },
-      "engines": {
-        "node": "^10 || ^12 || >=14"
-      }
-    },
     "node_modules/@vue/compiler-ssr": {
       "version": "3.5.32",
       "resolved": "https://registry.npmjs.org/@vue/compiler-ssr/-/compiler-ssr-3.5.32.tgz",
@@ -12944,9 +12916,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.6",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
-      "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+      "version": "8.5.9",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.9.tgz",
+      "integrity": "sha512-7a70Nsot+EMX9fFU3064K/kdHWZqGVY+BADLyXc8Dfv+mTLLVl6JzJpPaCZ2kQL9gIJvKXSLMHhqdRRjwQeFtw==",
       "funding": [
         {
           "type": "opencollective",
@@ -15886,35 +15858,6 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
-    "node_modules/vite/node_modules/postcss": {
-      "version": "8.5.8",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.8.tgz",
-      "integrity": "sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==",
-      "dev": true,
-      "funding": [
-        {
-          "type": "opencollective",
-          "url": "https://opencollective.com/postcss/"
-        },
-        {
-          "type": "tidelift",
-          "url": "https://tidelift.com/funding/github/npm/postcss"
-        },
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/ai"
-        }
-      ],
-      "license": "MIT",
-      "dependencies": {
-        "nanoid": "^3.3.11",
-        "picocolors": "^1.1.1",
-        "source-map-js": "^1.2.1"
-      },
-      "engines": {
-        "node": "^10 || ^12 || >=14"
-      }
-    },
     "node_modules/vitest": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/vitest/-/vitest-4.1.2.tgz",
diff --git a/package.json b/package.json
index f5d96c8372..30f48dea2c 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
     "mini-css-extract-plugin": "2.10.0",
     "minimatch": "10.2.5",
     "pdfobject": "2.3.0",
-    "postcss": "8.5.6",
+    "postcss": "8.5.9",
     "postcss-loader": "8.2.1",
     "postcss-nesting": "14.0.0",
     "pretty-ms": "9.0.0",