diff --git a/package.json b/package.json
index b381f099c719..bd799c419873 100644
--- a/package.json
+++ b/package.json
@@ -71,7 +71,7 @@
     "outdent": "0.8.0",
     "parse-srcset": "ikatyang/parse-srcset#54eb9c1cb21db5c62b4d0e275d7249516df6f0ee",
     "please-upgrade-node": "3.2.0",
-    "postcss-less": "3.1.4",
+    "postcss-less": "5.0.0",
     "postcss-media-query-parser": "0.2.3",
     "postcss-scss": "2.1.1",
     "postcss-selector-parser": "2.2.3",
diff --git a/yarn.lock b/yarn.lock
index a75a8ec660cc..b0b1370804dc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5449,12 +5449,10 @@ pluralize@^8.0.0:
   resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-8.0.0.tgz#1a6fa16a38d12a1901e0320fa017051c539ce3b1"
   integrity sha512-Nc3IT5yHzflTfbjgqWcCPpo7DaKy4FnpB0l/zCAW0Tc7jxAiuqSxHasntB3D7887LSrA93kDJ9IXovxJYxyLCA==
 
-postcss-less@3.1.4:
-  version "3.1.4"
-  resolved "https://registry.yarnpkg.com/postcss-less/-/postcss-less-3.1.4.tgz#369f58642b5928ef898ffbc1a6e93c958304c5ad"
-  integrity sha512-7TvleQWNM2QLcHqvudt3VYjULVB49uiW6XzEUFmvwHzvsOEF5MwBrIXZDJQvJNFGjJQTzSzZnDoCJ8h/ljyGXA==
-  dependencies:
-    postcss "^7.0.14"
+postcss-less@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/postcss-less/-/postcss-less-5.0.0.tgz#3fa361ed8e52a9c3e6e4fdb9bb95fd9032f3c62b"
+  integrity sha512-djK6NlApALJeBnNx7CzLatq64eMF3BCyzBH+faYPxrvNHHM/YCimJ6XQkgWgtim2G89EzdQG4Ed0lGNCXPfD7A==
 
 postcss-media-query-parser@0.2.3:
   version "0.2.3"
@@ -5486,7 +5484,7 @@ postcss-values-parser@2.0.1:
     indexes-of "^1.0.1"
     uniq "^1.0.1"
 
-postcss@^7.0.14, postcss@^7.0.6:
+postcss@^7.0.6:
   version "7.0.39"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.39.tgz#9624375d965630e2e1f2c02a935c82a59cb48309"
   integrity sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==