diff --git a/web/package-lock.json b/web/package-lock.json
index c436e74..c0e6c59 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -14,7 +14,7 @@
         "astro": "^6.3.7",
         "isomorphic-dompurify": "^3.13.0",
         "marked": "^18.0.0",
-        "postcss": "^8.5.0",
+        "postcss": "^8.5.15",
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
         "recharts": "^3.8.0",
@@ -5496,9 +5496,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.14",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.14.tgz",
-      "integrity": "sha512-SoSL4+OSEtR99LHFZQiJLkT59C5B1amGO1NzTwj7TT1qCUgUO6hxOvzkOYxD+vMrXBM3XJIKzokoERdqQq/Zmg==",
+      "version": "8.5.15",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",
+      "integrity": "sha512-FfR8sjd4em2T6fb3I2MwAJU7HWVMr9zba+enmQeeWFfCbm+UOC/0X4DS8XtpUTMwWMGbjKYP7xjfNekzyGmB3A==",
       "funding": [
         {
           "type": "opencollective",
@@ -5515,7 +5515,7 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "nanoid": "^3.3.11",
+        "nanoid": "^3.3.12",
         "picocolors": "^1.1.1",
         "source-map-js": "^1.2.1"
       },
diff --git a/web/package.json b/web/package.json
index 59e7912..9975a4c 100644
--- a/web/package.json
+++ b/web/package.json
@@ -16,7 +16,7 @@
     "astro": "^6.3.7",
     "isomorphic-dompurify": "^3.13.0",
     "marked": "^18.0.0",
-    "postcss": "^8.5.0",
+    "postcss": "^8.5.15",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",
     "recharts": "^3.8.0",