diff --git a/extensions/samples/electron-webpack/package.json b/extensions/samples/electron-webpack/package.json
index 62f47f6e2f..e0f593f7c3 100644
--- a/extensions/samples/electron-webpack/package.json
+++ b/extensions/samples/electron-webpack/package.json
@@ -43,7 +43,7 @@
     "eslint-plugin-import": "^2.26.0",
     "fork-ts-checker-webpack-plugin": "^7.2.13",
     "node-loader": "^2.0.0",
-    "postcss": "^8.4.18",
+    "postcss": "^8.5.10",
     "postcss-loader": "^4.2.0",
     "sass": "^1.3.0",
     "sass-loader": "^10.1.1",
diff --git a/package-lock.json b/package-lock.json
index 04a920d87f..c001ba78ac 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -119,7 +119,7 @@
                 "eslint-plugin-import": "^2.26.0",
                 "fork-ts-checker-webpack-plugin": "^7.2.13",
                 "node-loader": "^2.0.0",
-                "postcss": "^8.4.18",
+                "postcss": "^8.5.10",
                 "postcss-loader": "^4.2.0",
                 "sass": "^1.3.0",
                 "sass-loader": "^10.1.1",
@@ -30696,9 +30696,9 @@
             }
         },
         "node_modules/postcss": {
-            "version": "8.5.6",
-            "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
-            "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+            "version": "8.5.10",
+            "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.10.tgz",
+            "integrity": "sha512-pMMHxBOZKFU6HgAZ4eyGnwXF/EvPGGqUr0MnZ5+99485wwW41kW91A4LOGxSHhgugZmSChL5AlElNdwlNgcnLQ==",
             "dev": true,
             "funding": [
                 {
@@ -46492,7 +46492,7 @@
                 "fork-ts-checker-webpack-plugin": "^7.2.1",
                 "jest": "^29.5.0",
                 "node-loader": "^2.0.0",
-                "postcss": "^8.4.31",
+                "postcss": "^8.5.10",
                 "postcss-loader": "^4.2.0",
                 "sass": "^1.55.0",
                 "sass-loader": "^10.1.1",
@@ -49338,7 +49338,7 @@
                 "fork-ts-checker-webpack-plugin": "^7.2.1",
                 "jest": "^29.5.0",
                 "node-loader": "^2.0.0",
-                "postcss": "^8.4.31",
+                "postcss": "^8.5.10",
                 "postcss-loader": "^4.2.0",
                 "sass": "^1.55.0",
                 "sass-loader": "^10.1.1",
diff --git a/samples/msal-browser-samples/COOP/package.json b/samples/msal-browser-samples/COOP/package.json
index 5e1da43741..29673474a5 100644
--- a/samples/msal-browser-samples/COOP/package.json
+++ b/samples/msal-browser-samples/COOP/package.json
@@ -35,7 +35,7 @@
     "fork-ts-checker-webpack-plugin": "^7.2.1",
     "jest": "^29.5.0",
     "node-loader": "^2.0.0",
-    "postcss": "^8.4.31",
+    "postcss": "^8.5.10",
     "postcss-loader": "^4.2.0",
     "sass": "^1.55.0",
     "sass-loader": "^10.1.1",
diff --git a/samples/msal-node-samples/ElectronSystemBrowserTestApp/package.json b/samples/msal-node-samples/ElectronSystemBrowserTestApp/package.json
index 66fad0d966..154f2f55fe 100644
--- a/samples/msal-node-samples/ElectronSystemBrowserTestApp/package.json
+++ b/samples/msal-node-samples/ElectronSystemBrowserTestApp/package.json
@@ -45,7 +45,7 @@
         "fork-ts-checker-webpack-plugin": "^7.2.1",
         "jest": "^29.5.0",
         "node-loader": "^2.0.0",
-        "postcss": "^8.4.31",
+        "postcss": "^8.5.10",
         "postcss-loader": "^4.2.0",
         "sass": "^1.55.0",
         "sass-loader": "^10.1.1",