diff --git a/package.json b/package.json
index dbe23be..08f60ea 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "crx": "^5.0.1",
     "json-merge-patch": "^1.0.2",
     "json5": "^2.2.3",
-    "postcss": "^8.5.2",
+    "postcss": "^8.5.3",
     "ts-node": "^10.9.2",
     "ts-unused-exports": "^11.0.1",
     "tsx": "^4.19.2",
diff --git a/yarn.lock b/yarn.lock
index 72c6090..ace3464 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3651,10 +3651,10 @@ 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@^8.5.1, postcss@^8.5.2:
-  version "8.5.2"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.2.tgz#e7b99cb9d2ec3e8dd424002e7c16517cb2b846bd"
-  integrity sha512-MjOadfU3Ys9KYoX0AdkBlFEF1Vx37uCCeN4ZHnmwm9FfpbsGWMZeBLMmmpY+6Ocqod7mkdZ0DT31OlbsFrLlkA==
+postcss@^8.5.1, 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==
   dependencies:
     nanoid "^3.3.8"
     picocolors "^1.1.1"