diff --git a/sites/dev/package.json b/sites/dev/package.json
index 3705c9407e9..17e0580161b 100644
--- a/sites/dev/package.json
+++ b/sites/dev/package.json
@@ -61,7 +61,7 @@
   "devDependencies": {
     "autoprefixer": "10.4.17",
     "js-yaml": "4.1.0",
-    "postcss": "8.4.34",
+    "postcss": "8.4.35",
     "remark-extract-frontmatter": "3.2.0",
     "remark-mdx-frontmatter": "4.0.0",
     "tailwindcss": "3.4.1",
diff --git a/sites/lab/package.json b/sites/lab/package.json
index 20e6e3fcf77..f8c4a926ec3 100644
--- a/sites/lab/package.json
+++ b/sites/lab/package.json
@@ -62,7 +62,7 @@
   "devDependencies": {
     "autoprefixer": "10.4.17",
     "js-yaml": "4.1.0",
-    "postcss": "8.4.34",
+    "postcss": "8.4.35",
     "remark-extract-frontmatter": "3.2.0",
     "remark-mdx-frontmatter": "4.0.0",
     "tailwindcss": "3.4.1",
diff --git a/sites/org/package.json b/sites/org/package.json
index 9ae190cf068..ed8eba51b1a 100644
--- a/sites/org/package.json
+++ b/sites/org/package.json
@@ -69,7 +69,7 @@
   "devDependencies": {
     "autoprefixer": "10.4.17",
     "js-yaml": "4.1.0",
-    "postcss": "8.4.34",
+    "postcss": "8.4.35",
     "remark-extract-frontmatter": "3.2.0",
     "remark-mdx-frontmatter": "4.0.0",
     "tailwindcss": "3.4.1",
diff --git a/yarn.lock b/yarn.lock
index 53057aea324..002f9c6da74 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -11334,10 +11334,10 @@ postcss@8.4.31:
     picocolors "^1.0.0"
     source-map-js "^1.0.2"
 
-postcss@8.4.34, postcss@^8.4.23:
-  version "8.4.34"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.34.tgz#563276e86b4ff20dfa5eed0d394d4c53853b2051"
-  integrity sha512-4eLTO36woPSocqZ1zIrFD2K1v6wH7pY1uBh0JIM2KKfrVtGvPFiAku6aNOP0W1Wr9qwnaCsF0Z+CrVnryB2A8Q==
+postcss@8.4.35, postcss@^8.4.23:
+  version "8.4.35"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.35.tgz#60997775689ce09011edf083a549cea44aabe2f7"
+  integrity sha512-u5U8qYpBCpN13BsiEB0CbR1Hhh4Gc0zLFuedrHJKMctHCHAGrMdG0PRM/KErzAL3CU6/eckEtmHNB3x6e3c0vA==
   dependencies:
     nanoid "^3.3.7"
     picocolors "^1.0.0"