diff --git a/package-lock.json b/package-lock.json
index f9e73ad..2c43e1d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10,7 +10,7 @@
       "license": "ISC",
       "devDependencies": {
         "autoprefixer": "^10.4.20",
-        "postcss": "^8.5.1",
+        "postcss": "^8.5.3",
         "postcss-cli": "^11.0.0"
       }
     },
@@ -642,9 +642,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.1",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.1.tgz",
-      "integrity": "sha512-6oz2beyjc5VMn/KV1pPw8fliQkhBXrVn1Z3TVyqZxU8kZpzEKhBdmCFqI6ZbmGtamQvQGuU1sgPTk8ZrXDD7jQ==",
+      "version": "8.5.3",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.3.tgz",
+      "integrity": "sha512-dle9A3yYxlBSrt8Fu+IpjGT8SY8hN0mlaA6GY8t0P5PjIOZemULz/E2Bnm/2dcUOena75OTNkHI76uZBNUUq3A==",
       "dev": true,
       "funding": [
         {
diff --git a/package.json b/package.json
index a5d82ef..16f7382 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
   "homepage": "https://github.com/google/docsy-example#readme",
   "devDependencies": {
     "autoprefixer": "^10.4.20",
-    "postcss": "^8.5.1",
+    "postcss": "^8.5.3",
     "postcss-cli": "^11.0.0"
   }
 }