diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index 7b6135269513..a8b4cc5ab898 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -33,7 +33,7 @@
     "glob": "7.1.6",
     "jest-worker": "25.1.0",
     "karma-source-map-support": "1.4.0",
-    "less": "3.11.1",
+    "less": "3.11.3",
     "less-loader": "5.0.0",
     "license-webpack-plugin": "2.1.4",
     "loader-utils": "2.0.0",
diff --git a/yarn.lock b/yarn.lock
index 83f2c17f5d52..76bd0931d0c5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6992,7 +6992,24 @@ less-loader@5.0.0:
     loader-utils "^1.1.0"
     pify "^4.0.1"
 
-less@3.11.1, less@^3.10.3:
+less@3.11.3:
+  version "3.11.3"
+  resolved "https://registry.yarnpkg.com/less/-/less-3.11.3.tgz#2d853954fcfe0169a8af869620bcaa16563dcc1c"
+  integrity sha512-VkZiTDdtNEzXA3LgjQiC3D7/ejleBPFVvq+aRI9mIj+Zhmif5TvFPM244bT4rzkvOCvJ9q4zAztok1M7Nygagw==
+  dependencies:
+    clone "^2.1.2"
+    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"
+    promise "^7.1.1"
+    request "^2.83.0"
+    source-map "~0.6.0"
+
+less@^3.10.3:
   version "3.11.1"
   resolved "https://registry.yarnpkg.com/less/-/less-3.11.1.tgz#c6bf08e39e02404fe6b307a3dfffafdc55bd36e2"
   integrity sha512-tlWX341RECuTOvoDIvtFqXsKj072hm3+9ymRBe76/mD6O5ZZecnlAOVDlWAleF2+aohFrxNidXhv2773f6kY7g==