diff --git a/package.json b/package.json
index 82a5c363..8e6ca09e 100644
--- a/package.json
+++ b/package.json
@@ -178,7 +178,7 @@
     "js-yaml": "3.14.2",
     "jsonlint": "1.6.3",
     "keymaster": "1.6.2",
-    "less": "4.5.1",
+    "less": "4.6.4",
     "less-loader": "7.3.0",
     "list.js": "2.3.1",
     "mathjax": "2.7.9",
diff --git a/yarn.lock b/yarn.lock
index c3fa9c15..5cc55fbe 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1566,7 +1566,7 @@ __metadata:
     jsdom: "npm:24.1.3"
     jsonlint: "npm:1.6.3"
     keymaster: "npm:1.6.2"
-    less: "npm:4.5.1"
+    less: "npm:4.6.4"
     less-loader: "npm:7.3.0"
     list.js: "npm:2.3.1"
     lodash: "npm:4.18.1"
@@ -4305,12 +4305,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"copy-anything@npm:^2.0.1":
-  version: 2.0.6
-  resolution: "copy-anything@npm:2.0.6"
+"copy-anything@npm:^3.0.5":
+  version: 3.0.5
+  resolution: "copy-anything@npm:3.0.5"
   dependencies:
-    is-what: "npm:^3.14.1"
-  checksum: 10/3b41be8f6322c2c13e93cde62a64d532f138f31d44ab85a3405d88601134afccc068be06534c162ed5c06b209788c423d7aaa50f1c34a92db81a1f8560d199eb
+    is-what: "npm:^4.1.8"
+  checksum: 10/4c41385a94a1cff6352a954f9b1c05b6bb1b70713a2d31f4c7b188ae7187ce00ddcc9c09bd58d24cd35b67fc6dd84df5954c0be86ea10700ff74e677db3cb09c
   languageName: node
   linkType: hard
 
@@ -9044,10 +9044,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"is-what@npm:^3.14.1":
-  version: 3.14.1
-  resolution: "is-what@npm:3.14.1"
-  checksum: 10/249beb4a8c1729c80ed24fa8527835301c8c70d2fa99706a301224576e0650df61edd7a0a8853999bf5fbe2c551f07148d2c3535260772e05a4c373d3d5362e1
+"is-what@npm:^4.1.8":
+  version: 4.1.16
+  resolution: "is-what@npm:4.1.16"
+  checksum: 10/f6400634bae77be6903365dc53817292e1c4d8db1b467515d0c842505b8388ee8e558326d5e6952cb2a9d74116eca2af0c6adb8aa7e9d5c845a130ce9328bf13
   languageName: node
   linkType: hard
 
@@ -9561,11 +9561,11 @@ __metadata:
   languageName: node
   linkType: hard
 
-"less@npm:4.5.1":
-  version: 4.5.1
-  resolution: "less@npm:4.5.1"
+"less@npm:4.6.4":
+  version: 4.6.4
+  resolution: "less@npm:4.6.4"
   dependencies:
-    copy-anything: "npm:^2.0.1"
+    copy-anything: "npm:^3.0.5"
     errno: "npm:^0.1.1"
     graceful-fs: "npm:^4.1.2"
     image-size: "npm:~0.5.0"
@@ -9574,7 +9574,6 @@ __metadata:
     needle: "npm:^3.1.0"
     parse-node-version: "npm:^1.0.1"
     source-map: "npm:~0.6.0"
-    tslib: "npm:^2.3.0"
   dependenciesMeta:
     errno:
       optional: true
@@ -9592,7 +9591,7 @@ __metadata:
       optional: true
   bin:
     lessc: bin/lessc
-  checksum: 10/ea48075c73e206520b738c9387668a84cec404d24972b9e93c038fdde6ee38f8e2e9c820ed41e299c9f421711f4ce5bc9f719e6939367a0e6d5177d27f593038
+  checksum: 10/8463c56e3eeac147ce4da7a2e7178e685fe2f8579c165c79381a3a4f87d70555058c9d1ebf420e272e90f3ee9b488cb3d418ed0c7a5681d26d20c5c1a956ea50
   languageName: node
   linkType: hard
 
@@ -16516,7 +16515,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"tslib@npm:^2.0.3, tslib@npm:^2.3.0":
+"tslib@npm:^2.0.3":
   version: 2.8.1
   resolution: "tslib@npm:2.8.1"
   checksum: 10/3e2e043d5c2316461cb54e5c7fe02c30ef6dccb3384717ca22ae5c6b5bc95232a6241df19c622d9c73b809bea33b187f6dbc73030963e29950c2141bc32a79f7