diff --git a/package.json b/package.json
index 91d1fdb1..220c3308 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
 		"knockout-postbox": "0.6.1",
 		"knockout-sortable": "1.3.0",
 		"knockout.validation": "2.0.4",
-		"less": "4.6.3",
+		"less": "4.6.4",
 		"lie": "3.3.0",
 		"lightbox2": "2.12.0",
 		"moment": "2.30.1",
diff --git a/yarn.lock b/yarn.lock
index f6b01797..db3beeac 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3833,10 +3833,10 @@ lead@^4.0.0:
   resolved "https://registry.npmjs.org/lead/-/lead-4.0.0.tgz"
   integrity sha512-DpMa59o5uGUWWjruMp71e6knmwKU3jRBBn1kjuLWN9EeIOxNeSAwvHf03WIl8g/ZMR2oSQC9ej3yeLBwdDc/pg==
 
-less@4.6.3:
-  version "4.6.3"
-  resolved "https://registry.yarnpkg.com/less/-/less-4.6.3.tgz#0f7de4ad72d12ad2c2b33f21a9e42c1a6a4716af"
-  integrity sha512-xxjVIiz0rvWAhx49t8YLA/Dj6Uig4XdJgTRI5hbYHGmiDSh+S8hi2Wxsed2trjl/uur4kbW2+e2a8Mrk9Rcgbw==
+less@4.6.4:
+  version "4.6.4"
+  resolved "https://registry.yarnpkg.com/less/-/less-4.6.4.tgz#3ff8068e6c8a59f1ece8a6b9227bda28c1ed68a2"
+  integrity sha512-OJmO5+HxZLLw0RLzkqaNHzcgEAQG7C0y3aMbwtCzIUFZsLMNNq/1IdAdHEycQ58CwUO3jPTHmoN+tE5I7FQxNg==
   dependencies:
     copy-anything "^3.0.5"
     parse-node-version "^1.0.1"