diff --git a/sample-app/package.json b/sample-app/package.json
index 5c430b00..348b2576 100644
--- a/sample-app/package.json
+++ b/sample-app/package.json
@@ -17,7 +17,7 @@
     "eslint": "^8.47.0",
     "eslint-config-next": "^13.4.16",
     "next": "^13.4.16",
-    "postcss": "^8.4.27",
+    "postcss": "^8.4.31",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
     "server-only": "^0.0.1",
diff --git a/sample-app/yarn.lock b/sample-app/yarn.lock
index f7a5fef8..a3fca234 100644
--- a/sample-app/yarn.lock
+++ b/sample-app/yarn.lock
@@ -2203,10 +2203,10 @@ postcss@8.4.14:
     picocolors "^1.0.0"
     source-map-js "^1.0.2"
 
-postcss@^8.4.23, postcss@^8.4.27:
-  version "8.4.28"
-  resolved "https://registry.npmjs.org/postcss/-/postcss-8.4.28.tgz"
-  integrity sha512-Z7V5j0cq8oEKyejIKfpD8b4eBy9cwW2JWPk0+fB1HOAMsfHbnAXLLS+PfVWlzMSLQaWttKDt607I0XHmpE67Vw==
+postcss@^8.4.23, postcss@^8.4.31:
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
   dependencies:
     nanoid "^3.3.6"
     picocolors "^1.0.0"