diff --git a/site/package-lock.json b/site/package-lock.json
index 442666fc2..a47f781e4 100644
--- a/site/package-lock.json
+++ b/site/package-lock.json
@@ -12,6 +12,7 @@
         "@fontsource-variable/archivo": "^5.2.8",
         "@fontsource/ibm-plex-mono": "^5.2.7",
         "astro": "^6.3.1",
+        "postcss": "^8.5.18",
         "sharp": "^0.34.5"
       }
     },
@@ -1916,7 +1917,6 @@
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       "integrity": "sha512-UVJyE9MttOsBQIDKw1skb9nAwQuR5wuGD3+82K6JgJlm/Y+KI92oNsMNGZCYdDsVtRHSak0pcV5Dno5+4jh9sw==",
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -2003,7 +2003,6 @@
       "resolved": "https://registry.npmjs.org/astro/-/astro-6.3.7.tgz",
       "integrity": "sha512-zIeDRrI0qNgN1lcCjNqt6/IVCVej7VwSa326cO8uP9BOk1cg4QuffhLnOn2gCgWQr32/wxpSRFfXiLKHglu1Tw==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@astrojs/compiler": "^4.0.0",
         "@astrojs/internal-helpers": "0.9.1",
@@ -4905,9 +4904,9 @@
       }
     },
     "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": "8.5.18",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.18.tgz",
+      "integrity": "sha512-xdB1oSLHbz1vRWgCDalrCqEFTWzFlhqFC5tIHLMOSUIjhm3XXQ1qrFy8S/ESr1JYRRXqM3c1QFiMZUJdUTqyMQ==",
       "funding": [
         {
           "type": "opencollective",
@@ -4923,7 +4922,6 @@
         }
       ],
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "nanoid": "^3.3.12",
         "picocolors": "^1.1.1",
@@ -5385,7 +5383,6 @@
       "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.60.4.tgz",
       "integrity": "sha512-WHeFSbZYsPu3+bLoNRUuAO+wavNlocOPf3wSHTP7hcFKVnJeWsYlCDbr3mTS14FCizf9ccIxXA8sGL8zKeQN3g==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@types/estree": "1.0.8"
       },
@@ -6049,7 +6046,6 @@
       "resolved": "https://registry.npmjs.org/vite/-/vite-7.3.3.tgz",
       "integrity": "sha512-/4XH147Ui7OGTjg3HbdWe5arnZQSbfuRzdr9Ec7TQi5I7R+ir0Rlc9GIvD4v0XZurELqA035KVXJXpR61xhiTA==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "esbuild": "^0.27.0",
         "fdir": "^6.5.0",
diff --git a/site/package.json b/site/package.json
index 37ab57b59..d509ca749 100644
--- a/site/package.json
+++ b/site/package.json
@@ -14,6 +14,7 @@
     "@fontsource-variable/archivo": "^5.2.8",
     "@fontsource/ibm-plex-mono": "^5.2.7",
     "astro": "^6.3.1",
+    "postcss": "^8.5.18",
     "sharp": "^0.34.5"
   }
 }