diff --git a/package.json b/package.json
index 2358222..f7e80f9 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
         "mwn": "^3.0.3",
         "octokit": "^5.0.5",
         "opencc-js": "^1.4.1",
-        "postcss": "^8.5.20",
+        "postcss": "^8.5.23",
         "react": "^19.2.8",
         "react-dom": "^19.2.8",
         "sass-embedded": "^1.100.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 0fada7c..825fc85 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -247,8 +247,8 @@ importers:
         specifier: ^1.4.1
         version: 1.4.1
       postcss:
-        specifier: ^8.5.20
-        version: 8.5.20
+        specifier: ^8.5.23
+        version: 8.5.23
       react:
         specifier: ^19.2.8
         version: 19.2.8
@@ -2048,6 +2048,10 @@ packages:
     resolution: {integrity: sha512-lW616l85ucIQL+FocMmL7pQFPqBmwejrCMg+iPxyImlrANNJG9NHq/RkyCZopDhd8C3LA03PHRJDjkbGu8vvug==}
     engines: {node: ^10 || ^12 || >=14}
 
+  postcss@8.5.23:
+    resolution: {integrity: sha512-g50586zr4bZmwFiTlflMu8E0bDTb5I5gertgwAKmsdUlTQIhZtunzUlD1WSzwcVWPoAVpsrA6vlfCD7oXvRwgg==}
+    engines: {node: ^10 || ^12 || >=14}
+
   proxy-from-env@2.1.0:
     resolution: {integrity: sha512-cJ+oHTW1VAEa8cJslgmUZrc+sjRKgAKl3Zyse6+PV38hZe/V6Z14TbCuXcan9F9ghlz4QrFr2c92TNF82UkYHA==}
     engines: {node: '>=10'}
@@ -3149,7 +3153,7 @@ snapshots:
       '@alloc/quick-lru': 5.2.0
       '@tailwindcss/node': 4.3.3
       '@tailwindcss/oxide': 4.3.3
-      postcss: 8.5.20
+      postcss: 8.5.23
       tailwindcss: 4.3.3
 
   '@tailwindcss/vite@4.3.3(vite@8.1.5(@types/node@25.9.5)(esbuild@0.28.1)(jiti@2.7.0)(sass-embedded@1.100.0)(sass@1.100.0)(tsx@4.23.1))':
@@ -3860,6 +3864,12 @@ snapshots:
       picocolors: 1.1.1
       source-map-js: 1.2.1
 
+  postcss@8.5.23:
+    dependencies:
+      nanoid: 3.3.16
+      picocolors: 1.1.1
+      source-map-js: 1.2.1
+
   proxy-from-env@2.1.0: {}
 
   psl@1.15.0:
@@ -4199,7 +4209,7 @@ snapshots:
     dependencies:
       lightningcss: 1.32.0
       picomatch: 4.0.5
-      postcss: 8.5.20
+      postcss: 8.5.23
       rolldown: 1.1.5
       tinyglobby: 0.2.17
     optionalDependencies: