diff --git a/package.json b/package.json
index e062e260a..8592a8b6d 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "@types/react-dom": "^16.9.5",
     "@types/react-test-renderer": "^16.9.2",
     "injection-js": "^2.3.0",
-    "less": "^3.10.3",
+    "less": "^3.11.3",
     "npm-run-all": "^4.1.5",
     "parcel-bundler": "^1.12.3",
     "react": "^16.11.0",
diff --git a/yarn.lock b/yarn.lock
index 754acb292..4e9cf22ca 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6671,18 +6671,19 @@ kleur@^3.0.3:
   resolved "https://registry.yarnpkg.com/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"
   integrity sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==
 
-less@^3.10.3:
-  version "3.10.3"
-  resolved "https://registry.yarnpkg.com/less/-/less-3.10.3.tgz#417a0975d5eeecc52cff4bcfa3c09d35781e6792"
-  integrity sha512-vz32vqfgmoxF1h3K4J+yKCtajH0PWmjkIFgbs5d78E/c/e+UQTnI+lWK+1eQRE95PXM2mC3rJlLSSP9VQHnaow==
+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"
-    mkdirp "^0.5.0"
     promise "^7.1.1"
     request "^2.83.0"
     source-map "~0.6.0"
@@ -6986,6 +6987,14 @@ magic-string@^0.25.2, magic-string@^0.25.5:
   dependencies:
     sourcemap-codec "^1.4.4"
 
+make-dir@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-2.1.0.tgz#5f0310e18b8be898cc07009295a30ae41e91e6f5"
+  integrity sha512-LS9X+dc8KLxXCb8dni79fLIIUA5VyZoyjSMCwTluaXA0o27cCK0bhXkpgw+sTXVpPy/lSO57ilRixqk0vDmtRA==
+  dependencies:
+    pify "^4.0.1"
+    semver "^5.6.0"
+
 make-dir@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.0.0.tgz#1b5f39f6b9270ed33f9f054c5c0f84304989f801"
@@ -7232,7 +7241,7 @@ mixin-deep@^1.2.0:
     for-in "^1.0.2"
     is-extendable "^1.0.1"
 
-mkdirp@0.x, mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.1:
+mkdirp@0.x, mkdirp@^0.5.1, mkdirp@~0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   integrity sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=
@@ -7970,6 +7979,11 @@ pify@^3.0.0:
   resolved "https://registry.yarnpkg.com/pify/-/pify-3.0.0.tgz#e5a4acd2c101fdf3d9a4d07f0dbc4db49dd28176"
   integrity sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=
 
+pify@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/pify/-/pify-4.0.1.tgz#4b2cd25c50d598735c50292224fd8c6df41e3231"
+  integrity sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g==
+
 pirates@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/pirates/-/pirates-4.0.1.tgz#643a92caf894566f91b2b986d2c66950a8e2fb87"