diff --git a/webapp/package.json b/webapp/package.json
index 0a8c5653..60bbe372 100644
--- a/webapp/package.json
+++ b/webapp/package.json
@@ -33,7 +33,7 @@
     "html-webpack-plugin": "^5.6.7",
     "identity-obj-proxy": "^3.0.0",
     "mini-css-extract-plugin": "^2.10.2",
-    "postcss": "^8.5.20",
+    "postcss": "^8.5.21",
     "postcss-flexbugs-fixes": "^5.0.2",
     "postcss-loader": "^8.2.1",
     "postcss-normalize": "^13.0.1",
diff --git a/webapp/yarn.lock b/webapp/yarn.lock
index 52508406..88bb27f6 100644
--- a/webapp/yarn.lock
+++ b/webapp/yarn.lock
@@ -8943,10 +8943,10 @@ postcss-value-parser@^4.1.0, 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@^8.2.14, postcss@^8.4.40, postcss@^8.5.20:
-  version "8.5.20"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.20.tgz#316a139da79484ce55969fa7bb6f2f1abcc14060"
-  integrity sha512-lW616l85ucIQL+FocMmL7pQFPqBmwejrCMg+iPxyImlrANNJG9NHq/RkyCZopDhd8C3LA03PHRJDjkbGu8vvug==
+postcss@^8.2.14, postcss@^8.4.40, postcss@^8.5.21:
+  version "8.5.21"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.21.tgz#47a779bd831733ff620e608d233b195ee1e7d66c"
+  integrity sha512-v4sDNP3fdNiWMfabO7OwOQdOX8TiQSztKyT1Wj0w+j7LDallJThJRBBBmzVGyYj0crMh7jlV4zepPkiNu9UwDQ==
   dependencies:
     nanoid "^3.3.16"
     picocolors "^1.1.1"