diff --git a/web/package-lock.json b/web/package-lock.json
index 9d1b30d..97697c4 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -14,7 +14,7 @@
         "astro": "^6.4.6",
         "isomorphic-dompurify": "^3.17.0",
         "marked": "^18.0.5",
-        "postcss": "^8.5.15",
+        "postcss": "^8.5.23",
         "react": "^19.2.7",
         "react-dom": "^19.2.7",
         "recharts": "^3.8.0",
@@ -2407,6 +2407,34 @@
         "tailwindcss": "4.3.1"
       }
     },
+    "node_modules/@tailwindcss/postcss/node_modules/postcss": {
+      "version": "8.5.15",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",
+      "integrity": "sha512-FfR8sjd4em2T6fb3I2MwAJU7HWVMr9zba+enmQeeWFfCbm+UOC/0X4DS8XtpUTMwWMGbjKYP7xjfNekzyGmB3A==",
+      "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": "^3.3.12",
+        "picocolors": "^1.1.1",
+        "source-map-js": "^1.2.1"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >=14"
+      }
+    },
     "node_modules/@tailwindcss/typography": {
       "version": "0.5.20",
       "resolved": "https://registry.npmjs.org/@tailwindcss/typography/-/typography-0.5.20.tgz",
@@ -5273,9 +5301,9 @@
       "license": "MIT"
     },
     "node_modules/nanoid": {
-      "version": "3.3.12",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.12.tgz",
-      "integrity": "sha512-ZB9RH/39qpq5Vu6Y+NmUaFhQR6pp+M2Xt76XBnEwDaGcVAqhlvxrl3B2bKS5D3NH3QR76v3aSrKaF/Kiy7lEtQ==",
+      "version": "3.3.16",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.16.tgz",
+      "integrity": "sha512-bzlKTyNJ7+LdGIIwy8ijFpIqEQIvafahV7eYykJ8Cvh42EdJeODoJ6gUJXpQJvej1BddH8OqTXZNE/KfbWAu8Q==",
       "funding": [
         {
           "type": "github",
@@ -5499,9 +5527,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.15",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.15.tgz",
-      "integrity": "sha512-FfR8sjd4em2T6fb3I2MwAJU7HWVMr9zba+enmQeeWFfCbm+UOC/0X4DS8XtpUTMwWMGbjKYP7xjfNekzyGmB3A==",
+      "version": "8.5.23",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.23.tgz",
+      "integrity": "sha512-g50586zr4bZmwFiTlflMu8E0bDTb5I5gertgwAKmsdUlTQIhZtunzUlD1WSzwcVWPoAVpsrA6vlfCD7oXvRwgg==",
       "funding": [
         {
           "type": "opencollective",
@@ -5518,7 +5546,7 @@
       ],
       "license": "MIT",
       "dependencies": {
-        "nanoid": "^3.3.12",
+        "nanoid": "^3.3.16",
         "picocolors": "^1.1.1",
         "source-map-js": "^1.2.1"
       },
diff --git a/web/package.json b/web/package.json
index 8ee295b..8b52f17 100644
--- a/web/package.json
+++ b/web/package.json
@@ -16,7 +16,7 @@
     "astro": "^6.4.6",
     "isomorphic-dompurify": "^3.17.0",
     "marked": "^18.0.5",
-    "postcss": "^8.5.15",
+    "postcss": "^8.5.23",
     "react": "^19.2.7",
     "react-dom": "^19.2.7",
     "recharts": "^3.8.0",