diff --git a/package.json b/package.json
index 44e771ecf..318851fb6 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "grunt-uncss-inline": "1.2.7",
     "grunt-xmlmin": "0.1.8",
     "jit-grunt": "0.10.0",
-    "postcss": "8.4.28",
+    "postcss": "8.4.31",
     "sass": "1.66.1",
     "terser": "5.19.2"
   },
diff --git a/yarn.lock b/yarn.lock
index c42ebbefb..2bff0b876 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3598,10 +3598,10 @@ postcss-value-parser@^4.2.0:
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@8.4.28:
-  version "8.4.28"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.28.tgz#c6cc681ed00109072816e1557f889ef51cf950a5"
-  integrity sha512-Z7V5j0cq8oEKyejIKfpD8b4eBy9cwW2JWPk0+fB1HOAMsfHbnAXLLS+PfVWlzMSLQaWttKDt607I0XHmpE67Vw==
+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"