diff --git a/.changeset/heavy-dodos-try.md b/.changeset/heavy-dodos-try.md
new file mode 100644
index 000000000..a7a9a2da3
--- /dev/null
+++ b/.changeset/heavy-dodos-try.md
@@ -0,0 +1,5 @@
+---
+"modular-scripts": patch
+---
+
+Bump postcss from 8.4.5 to 8.4.6
diff --git a/packages/modular-scripts/package.json b/packages/modular-scripts/package.json
index 38f02527f..e79db8e3e 100644
--- a/packages/modular-scripts/package.json
+++ b/packages/modular-scripts/package.json
@@ -82,7 +82,7 @@
     "parse5": "6.0.1",
     "pkg-up": "3.1.0",
     "pnp-webpack-plugin": "1.6.4",
-    "postcss": "8.4.5",
+    "postcss": "8.4.6",
     "postcss-flexbugs-fixes": "4.2.1",
     "postcss-loader": "4.2.0",
     "postcss-normalize": "8.0.1",
diff --git a/yarn.lock b/yarn.lock
index 45c173853..2875d2af7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9396,7 +9396,7 @@ nan@^2.12.1:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.15.0.tgz#3f34a473ff18e15c1b5626b62903b5ad6e665fee"
   integrity sha512-8ZtvEnA2c5aYCZYd1cvgdnU6cqwixRoYg70xPLWUws5ORTa/lnw+u4amixRS/Ac5U5mQVgp9pnlSUnbNWFaWZQ==
 
-nanoid@^3.1.30:
+nanoid@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.2.0.tgz#62667522da6673971cca916a6d3eff3f415ff80c"
   integrity sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==
@@ -10767,14 +10767,14 @@ postcss-value-parser@^4.0.2, postcss-value-parser@^4.1.0, postcss-value-parser@^
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@8.4.5, postcss@^8.1.0, postcss@^8.2.1, postcss@^8.2.14:
-  version "8.4.5"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.5.tgz#bae665764dfd4c6fcc24dc0fdf7e7aa00cc77f95"
-  integrity sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==
+postcss@8.4.6, postcss@^8.1.0, postcss@^8.2.1, postcss@^8.2.14:
+  version "8.4.6"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.6.tgz#c5ff3c3c457a23864f32cb45ac9b741498a09ae1"
+  integrity sha512-OovjwIzs9Te46vlEx7+uXB0PLijpwjXGKXjVGGPIGubGpq7uh5Xgf6D6FiJ/SzJMBosHDp6a2hiXOS97iBXcaA==
   dependencies:
-    nanoid "^3.1.30"
+    nanoid "^3.2.0"
     picocolors "^1.0.0"
-    source-map-js "^1.0.1"
+    source-map-js "^1.0.2"
 
 postcss@^7, postcss@^7.0.14, postcss@^7.0.17, postcss@^7.0.26, postcss@^7.0.32, postcss@^7.0.5, postcss@^7.0.6:
   version "7.0.39"
@@ -11990,10 +11990,10 @@ source-list-map@^2.0.0, source-list-map@^2.0.1:
   resolved "https://registry.yarnpkg.com/source-list-map/-/source-list-map-2.0.1.tgz#3993bd873bfc48479cca9ea3a547835c7c154b34"
   integrity sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==
 
-source-map-js@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.1.tgz#a1741c131e3c77d048252adfa24e23b908670caf"
-  integrity sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA==
+source-map-js@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
+  integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
 
 source-map-resolve@^0.5.0:
   version "0.5.3"