diff --git a/package.json b/package.json
index 26dcd3b..67898b4 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
         "mwn": "^3.0.3",
         "octokit": "^5.0.5",
         "opencc-js": "^1.4.2",
-        "postcss": "^8.5.26",
+        "postcss": "^8.5.28",
         "react": "^19.2.8",
         "react-dom": "^19.2.8",
         "sass-embedded": "^1.103.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c1b8ead..4673cab 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -244,8 +244,8 @@ importers:
         specifier: ^1.4.2
         version: 1.4.2
       postcss:
-        specifier: ^8.5.26
-        version: 8.5.26
+        specifier: ^8.5.28
+        version: 8.5.28
       react:
         specifier: ^19.2.8
         version: 19.2.8
@@ -2148,6 +2148,10 @@ packages:
     resolution: {integrity: sha512-u82N74LFzG8ca+dD8puPnplTXoGH4fTPpVGuIbt36G3qvNlkvfD0lEAZSxaly3KX8TS/L1A1gsCEmvKmBcVbkQ==}
     engines: {node: ^10 || ^12 || >=14}
 
+  postcss@8.5.28:
+    resolution: {integrity: sha512-RRuzqDtt5Y9h3quz5hWhK+TPnsmVs6WwSU6LkJMeY4HstUEDuYTG8UJSdawMRzmzAtV+KEoG8N3Qg2qLy5vM/A==}
+    engines: {node: ^10 || ^12 || >=14}
+
   proxy-from-env@2.1.0:
     resolution: {integrity: sha512-cJ+oHTW1VAEa8cJslgmUZrc+sjRKgAKl3Zyse6+PV38hZe/V6Z14TbCuXcan9F9ghlz4QrFr2c92TNF82UkYHA==}
     engines: {node: '>=10'}
@@ -3229,7 +3233,7 @@ snapshots:
       '@alloc/quick-lru': 5.2.0
       '@tailwindcss/node': 4.3.3
       '@tailwindcss/oxide': 4.3.3
-      postcss: 8.5.26
+      postcss: 8.5.28
       tailwindcss: 4.3.3
 
   '@tailwindcss/vite@4.3.3(vite@8.2.2(@types/node@25.9.5)(esbuild@0.28.2)(jiti@2.7.0)(sass-embedded@1.103.1)(sass@1.103.1)(tsx@4.23.12))':
@@ -3996,6 +4000,12 @@ snapshots:
       picocolors: 1.1.1
       source-map-js: 1.2.1
 
+  postcss@8.5.28:
+    dependencies:
+      nanoid: 3.3.18
+      picocolors: 1.1.1
+      source-map-js: 1.2.1
+
   proxy-from-env@2.1.0: {}
 
   psl@1.15.0:
@@ -4356,7 +4366,7 @@ snapshots:
     dependencies:
       lightningcss: 1.33.0
       picomatch: 4.0.7
-      postcss: 8.5.26
+      postcss: 8.5.28
       rolldown: 1.2.6
       tinyglobby: 0.2.17
     optionalDependencies: