diff --git a/yarn.lock b/yarn.lock
index 0e9a42d..063312c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3083,10 +3083,12 @@ less-loader@^5.0.0:
     pify "^4.0.1"
 
 less@^3.0.4:
-  version "3.10.3"
-  resolved "https://registry.yarnpkg.com/less/-/less-3.10.3.tgz#417a0975d5eeecc52cff4bcfa3c09d35781e6792"
+  version "3.11.1"
+  resolved "https://registry.yarnpkg.com/less/-/less-3.11.1.tgz#c6bf08e39e02404fe6b307a3dfffafdc55bd36e2"
+  integrity sha512-tlWX341RECuTOvoDIvtFqXsKj072hm3+9ymRBe76/mD6O5ZZecnlAOVDlWAleF2+aohFrxNidXhv2773f6kY7g==
   dependencies:
     clone "^2.1.2"
+    tslib "^1.10.0"
   optionalDependencies:
     errno "^0.1.1"
     graceful-fs "^4.1.2"
@@ -5037,9 +5039,10 @@ trim-newlines@^1.0.0:
   dependencies:
     glob "^7.1.2"
 
-tslib@^1.9.0:
-  version "1.10.0"
-  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
+tslib@^1.10.0, tslib@^1.9.0:
+  version "1.11.1"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.11.1.tgz#eb15d128827fbee2841549e171f45ed338ac7e35"
+  integrity sha512-aZW88SY8kQbU7gpV19lN24LtXh/yD4ZZg6qieAJDDg+YBsJcSmLGK9QpnUjAKVG/xefmvJGd1WUmfpT/g6AJGA==
 
 tty-browserify@0.0.0:
   version "0.0.0"