diff --git a/package.json b/package.json
index fa3eb368f274..67c20526e28f 100644
--- a/package.json
+++ b/package.json
@@ -171,7 +171,7 @@
     "karma-jasmine": "~4.0.0",
     "karma-jasmine-html-reporter": "^1.5.0",
     "karma-source-map-support": "1.4.0",
-    "less": "4.1.0",
+    "less": "4.1.1",
     "less-loader": "7.3.0",
     "license-checker": "^25.0.0",
     "license-checker-webpack-plugin": "0.2.1",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index 9957d28020dc..10bf6565d768 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -39,7 +39,7 @@
     "inquirer": "7.3.3",
     "jest-worker": "26.6.2",
     "karma-source-map-support": "1.4.0",
-    "less": "4.1.0",
+    "less": "4.1.1",
     "less-loader": "7.3.0",
     "license-webpack-plugin": "2.3.11",
     "loader-utils": "2.0.0",
diff --git a/yarn.lock b/yarn.lock
index 8d4fd5cb4438..138476fc5352 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7097,7 +7097,24 @@ less-loader@7.3.0:
     loader-utils "^2.0.0"
     schema-utils "^3.0.0"
 
-less@4.1.0, less@^4.1.0:
+less@4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/less/-/less-4.1.1.tgz#15bf253a9939791dc690888c3ff424f3e6c7edba"
+  integrity sha512-w09o8tZFPThBscl5d0Ggp3RcrKIouBoQscnOMgFH3n5V3kN/CXGHNfCkRPtxJk6nKryDXaV9aHLK55RXuH4sAw==
+  dependencies:
+    copy-anything "^2.0.1"
+    parse-node-version "^1.0.1"
+    tslib "^1.10.0"
+  optionalDependencies:
+    errno "^0.1.1"
+    graceful-fs "^4.1.2"
+    image-size "~0.5.0"
+    make-dir "^2.1.0"
+    mime "^1.4.1"
+    needle "^2.5.2"
+    source-map "~0.6.0"
+
+less@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/less/-/less-4.1.0.tgz#a12708d1951239db1c9d7eaa405f1ebac9a75b8d"
   integrity sha512-w1Ag/f34g7LwtQ/sMVSGWIyZx+gG9ZOAEtyxeX1fG75is6BMyC2lD5kG+1RueX7PkAvlQBm2Lf2aN2j0JbVr2A==