diff --git a/package.json b/package.json
old mode 100644
new mode 100755
index 0f4681a5..1cfd7b98
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "handlebars-loader": "^1.7.0",
     "http-server": "^0.12.3",
     "less": "^4.0.0",
-    "less-loader": "^7.0.0 || ^8.0.0",
+    "less-loader": "^7.0.0 || ^8.0.0 || ^9.0.0",
     "mocha": "^8.2.1",
     "postcss": "^8.1.0",
     "postcss-loader": "^4.0.0 || ^5.0.0",
diff --git a/yarn.lock b/yarn.lock
old mode 100644
new mode 100755
index 463b4b4b..dc34f6b4
--- a/yarn.lock
+++ b/yarn.lock
@@ -4455,10 +4455,10 @@ left-pad@^1.3.0:
   resolved "https://registry.yarnpkg.com/left-pad/-/left-pad-1.3.0.tgz#5b8a3a7765dfe001261dde915589e782f8c94d1e"
   integrity sha512-XI5MPzVNApjAyhQzphX8BkmKsKUxD4LdyK24iZeQGinBN9yTQT3bFlCBy/aVx2HrNcqQGsdot8ghrjyrvMCoEA==
 
-"less-loader@^7.0.0 || ^8.0.0":
-  version "8.1.1"
-  resolved "https://registry.yarnpkg.com/less-loader/-/less-loader-8.1.1.tgz#ababe912580457ad00a4318146aac5b53e023f42"
-  integrity sha512-K93jJU7fi3n6rxVvzp8Cb88Uy9tcQKfHlkoezHwKILXhlNYiRQl4yowLIkQqmBXOH/5I8yoKiYeIf781HGkW9g==
+"less-loader@^7.0.0 || ^8.0.0 || ^9.0.0":
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/less-loader/-/less-loader-9.0.0.tgz#71a0b530174bddf89bb11a5019dd725f54df4791"
+  integrity sha512-bPen1xeGTZuYFFobcdz9kMUVgSSSDZQJtyhawtCtcz1QboQOwhkI7uCwp5UO+IZpO+LJS1W73YwxsufbBT6SBQ==
   dependencies:
     klona "^2.0.4"