diff --git a/package-lock.json b/package-lock.json
index 24fbb27e..f6b24a69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -13,7 +13,7 @@
         "eslint": "9.39.4",
         "jest": "30.3.0",
         "jsonlint-newline-fork": "1.6.8",
-        "less": "4.2.0",
+        "less": "4.6.4",
         "markdownlint": "0.40.0",
         "markdownlint-cli2": "0.22.1",
         "neostandard": "0.11.5",
@@ -3127,12 +3127,16 @@
       "license": "MIT"
     },
     "node_modules/copy-anything": {
-      "version": "2.0.6",
-      "resolved": "https://registry.npmjs.org/copy-anything/-/copy-anything-2.0.6.tgz",
-      "integrity": "sha512-1j20GZTsvKNkc4BY3NpMOM8tt///wY3FpIzozTOFO2ffuZcV61nojHXVKIy3WM+7ADCy5FVhdZYHYDdgTU0yJw==",
+      "version": "3.0.5",
+      "resolved": "https://registry.npmjs.org/copy-anything/-/copy-anything-3.0.5.tgz",
+      "integrity": "sha512-yCEafptTtb4bk7GLEQoM8KVJpxAfdBJYaXyzQEgQQQgYrZiDp8SJmGKlYza6CYjEDNstAdNdKA3UuoULlEbS6w==",
       "dev": true,
+      "license": "MIT",
       "dependencies": {
-        "is-what": "^3.14.1"
+        "is-what": "^4.1.8"
+      },
+      "engines": {
+        "node": ">=12.13"
       },
       "funding": {
         "url": "https://github.com/sponsors/mesqueeb"
@@ -5450,10 +5454,17 @@
       }
     },
     "node_modules/is-what": {
-      "version": "3.14.1",
-      "resolved": "https://registry.npmjs.org/is-what/-/is-what-3.14.1.tgz",
-      "integrity": "sha512-sNxgpk9793nzSs7bA6JQJGeIuRBQhAaNGG77kzYQgMkrID+lS6SlK07K5LaptscDlSaIgH+GPFzf+d75FVxozA==",
-      "dev": true
+      "version": "4.1.16",
+      "resolved": "https://registry.npmjs.org/is-what/-/is-what-4.1.16.tgz",
+      "integrity": "sha512-ZhMwEosbFJkA0YhFnNDgTM4ZxDRsS6HqTo7qsZM08fehyRYIYa0yHu5R6mgo1n/8MgaPBXiPimPD77baVFYg+A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.13"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/mesqueeb"
+      }
     },
     "node_modules/isarray": {
       "version": "2.0.5",
@@ -6384,20 +6395,20 @@
       "license": "MIT"
     },
     "node_modules/less": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/less/-/less-4.2.0.tgz",
-      "integrity": "sha512-P3b3HJDBtSzsXUl0im2L7gTO5Ubg8mEN6G8qoTS77iXxXX4Hvu4Qj540PZDvQ8V6DmX6iXo98k7Md0Cm1PrLaA==",
+      "version": "4.6.4",
+      "resolved": "https://registry.npmjs.org/less/-/less-4.6.4.tgz",
+      "integrity": "sha512-OJmO5+HxZLLw0RLzkqaNHzcgEAQG7C0y3aMbwtCzIUFZsLMNNq/1IdAdHEycQ58CwUO3jPTHmoN+tE5I7FQxNg==",
       "dev": true,
+      "license": "Apache-2.0",
       "dependencies": {
-        "copy-anything": "^2.0.1",
-        "parse-node-version": "^1.0.1",
-        "tslib": "^2.3.0"
+        "copy-anything": "^3.0.5",
+        "parse-node-version": "^1.0.1"
       },
       "bin": {
         "lessc": "bin/lessc"
       },
       "engines": {
-        "node": ">=6"
+        "node": ">=18"
       },
       "optionalDependencies": {
         "errno": "^0.1.1",
@@ -6414,6 +6425,7 @@
       "resolved": "https://registry.npmjs.org/make-dir/-/make-dir-2.1.0.tgz",
       "integrity": "sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==",
       "dev": true,
+      "license": "MIT",
       "optional": true,
       "dependencies": {
         "pify": "^4.0.1",
@@ -6428,6 +6440,7 @@
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
       "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g==",
       "dev": true,
+      "license": "ISC",
       "optional": true,
       "bin": {
         "semver": "bin/semver"
@@ -9163,7 +9176,8 @@
       "version": "2.6.2",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.6.2.tgz",
       "integrity": "sha512-AEYxH93jGFPn/a2iVAwW87VuUIkR1FVUKB77NwMF7nBTDkDrrT/Hpt/IrCJ0QXhW27jTBDcf5ZY7w6RiqTMw2Q==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "node_modules/type-check": {
       "version": "0.4.0",
diff --git a/package.json b/package.json
index c190ff9a..99c3b798 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "eslint": "9.39.4",
     "jest": "30.3.0",
     "jsonlint-newline-fork": "1.6.8",
-    "less": "4.2.0",
+    "less": "4.6.4",
     "markdownlint": "0.40.0",
     "markdownlint-cli2": "0.22.1",
     "neostandard": "0.11.5",