diff --git a/package.json b/package.json
index fe31f51e3..4a1be12cf 100644
--- a/package.json
+++ b/package.json
@@ -65,7 +65,7 @@
     "outdent": "0.7.1",
     "parse-srcset": "ikatyang/parse-srcset#54eb9c1cb21db5c62b4d0e275d7249516df6f0ee",
     "please-upgrade-node": "3.2.0",
-    "postcss": "8.1.2",
+    "postcss": "8.1.3",
     "postcss-less": "3.1.4",
     "postcss-media-query-parser": "0.2.3",
     "postcss-scss": "3.0.2",
diff --git a/yarn.lock b/yarn.lock
index a5f19e435..301d0ee05 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5307,10 +5307,10 @@ n-readlines@1.0.0:
   resolved "https://registry.yarnpkg.com/n-readlines/-/n-readlines-1.0.0.tgz#c353797f216c253fdfef7e91da4e8b17c29a91a6"
   integrity sha512-ISDqGcspVu6U3VKqtJZG1uR55SmNNF9uK0EMq1IvNVVZOui6MW6VR0+pIZhqz85ORAGp+4zW+5fJ/SE7bwEibA==
 
-nanoid@^3.1.12:
-  version "3.1.12"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.12.tgz#6f7736c62e8d39421601e4a0c77623a97ea69654"
-  integrity sha512-1qstj9z5+x491jfiC4Nelk+f8XBad7LN20PmyWINJEMRSf3wcAjAWysw1qaA8z6NSKe2sjq1hRSDpBH5paCb6A==
+nanoid@^3.1.15:
+  version "3.1.15"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.15.tgz#28e7c4ce56aff2d0c2d37814c7aef9d6c5b3e6f3"
+  integrity sha512-n8rXUZ8UU3lV6+43atPrSizqzh25n1/f00Wx1sCiE7R1sSHytZLTTiQl8DjC4IDLOnEZDlgJhy0yO4VsIpMxow==
 
 nanomatch@^1.2.9:
   version "1.2.13"
@@ -5865,14 +5865,14 @@ postcss-values-parser@2.0.1:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss@8.1.2, postcss@^8.1.0:
-  version "8.1.2"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.2.tgz#9731fcaa4f7b0bef47121821bdae9eeb609a324c"
-  integrity sha512-mToqEVFq8jF9TFhlIK4HhE34zknFJuNTgqtsr60vUvrWn+9TIYugCwiV1JZRxCuOrej2jjstun1bn4Bc7/1HkA==
+postcss@8.1.3, postcss@^8.1.0:
+  version "8.1.3"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.3.tgz#b25138b872ca9f9512c218d9d57ebb59015a9c39"
+  integrity sha512-AKsHGqd7HmXmL/EgyAjI4Gx719A5yQdt9HzyXrI8M/hzxfumecYS95kfvIt40UZqPVNoEt0Va1M3PG54XtNPbg==
   dependencies:
     colorette "^1.2.1"
     line-column "^1.0.2"
-    nanoid "^3.1.12"
+    nanoid "^3.1.15"
     source-map "^0.6.1"
 
 postcss@^7.0.14: