diff --git a/package.json b/package.json
index f5af7e7d..09694e26 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "homepage": "https://cpeditor.github.io/",
   "devDependencies": {
     "autoprefixer": "^10.4.21",
-    "postcss": "^8.5.3",
+    "postcss": "^8.5.5",
     "postcss-cli": "^10.1.0",
     "remark-cli": "^11.0.0",
     "remark-frontmatter": "^5.0.0",
diff --git a/yarn.lock b/yarn.lock
index cc5c308c..6b4aa798 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1344,7 +1344,7 @@ ms@2.1.2:
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
-nanoid@^3.3.8:
+nanoid@^3.3.11:
   version "3.3.11"
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.11.tgz#4f4f112cefbe303202f2199838128936266d185b"
   integrity sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==
@@ -1491,12 +1491,12 @@ 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@^8.5.3:
-  version "8.5.3"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.3.tgz#1463b6f1c7fb16fe258736cba29a2de35237eafb"
-  integrity sha512-dle9A3yYxlBSrt8Fu+IpjGT8SY8hN0mlaA6GY8t0P5PjIOZemULz/E2Bnm/2dcUOena75OTNkHI76uZBNUUq3A==
+postcss@^8.5.5:
+  version "8.5.5"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.5.tgz#04de7797f6911fb1c96550e96616d08681537ef3"
+  integrity sha512-d/jtm+rdNT8tpXuHY5MMtcbJFBkhXE6593XVR9UoGCH8jSFGci7jGvMGH5RYd5PBJW+00NZQt6gf7CbagJCrhg==
   dependencies:
-    nanoid "^3.3.8"
+    nanoid "^3.3.11"
     picocolors "^1.1.1"
     source-map-js "^1.2.1"