diff --git a/package.json b/package.json
index 35d29e1f..f3686b65 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "jquery": "^3.7.1",
     "jquery-ujs": "^1.2.3",
     "mini-css-extract-plugin": "^2.9.0",
-    "postcss": "^8.4.38",
+    "postcss": "^8.4.39",
     "postcss-flexbugs-fixes": "^5.0.2",
     "postcss-import": "^16.1.0",
     "postcss-loader": "^8.1.1",
diff --git a/yarn.lock b/yarn.lock
index c38821d0..1ad424fe 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5448,13 +5448,13 @@ postcss-value-parser@^4.0.0, postcss-value-parser@^4.1.0, postcss-value-parser@^
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@^8.2.14, postcss@^8.4.32, postcss@^8.4.33, postcss@^8.4.38:
-  version "8.4.38"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.38.tgz#b387d533baf2054288e337066d81c6bee9db9e0e"
-  integrity sha512-Wglpdk03BSfXkHoQa3b/oulrotAkwrlLDRSOb9D0bN86FdRyE9lppSp33aHNPgBa0JKCoB+drFLZkQoRRYae5A==
+postcss@^8.2.14, postcss@^8.4.32, postcss@^8.4.33, postcss@^8.4.38, postcss@^8.4.39:
+  version "8.4.39"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.39.tgz#aa3c94998b61d3a9c259efa51db4b392e1bde0e3"
+  integrity sha512-0vzE+lAiG7hZl1/9I8yzKLx3aR9Xbof3fBHKunvMfOCYAtMhrsnccJY2iTURb9EZd5+pLuiNV9/c/GZJOHsgIw==
   dependencies:
     nanoid "^3.3.7"
-    picocolors "^1.0.0"
+    picocolors "^1.0.1"
     source-map-js "^1.2.0"
 
 prelude-ls@^1.2.1: