diff --git a/package.json b/package.json
index ab18433..c46c8f1 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
     "hast-util-to-html": "^3.0.0",
     "hastscript": "^3.0.0",
     "html-tags": "^1.1.1",
-    "postcss": "^5.0.4",
+    "postcss": "^8.4.31",
     "postcss-selector-parser": "^2.0.0",
     "postcss-value-parser": "^3.3.0",
     "vendors": "^1.0.0"