diff --git a/package.json b/package.json
index 7067ee2e86bf..8412cb9f6a1d 100644
--- a/package.json
+++ b/package.json
@@ -171,7 +171,7 @@
     "license-checker": "^25.0.0",
     "loader-utils": "2.0.0",
     "magic-string": "0.25.7",
-    "mini-css-extract-plugin": "1.3.9",
+    "mini-css-extract-plugin": "1.4.0",
     "minimatch": "3.0.4",
     "minimist": "^1.2.0",
     "ng-packagr": "~12.0.0-next.0",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index a1cd9e5e0b93..22c96956ed14 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -42,7 +42,7 @@
     "less-loader": "7.3.0",
     "license-webpack-plugin": "2.3.15",
     "loader-utils": "2.0.0",
-    "mini-css-extract-plugin": "1.3.9",
+    "mini-css-extract-plugin": "1.4.0",
     "minimatch": "3.0.4",
     "open": "8.0.4",
     "ora": "5.4.0",
diff --git a/yarn.lock b/yarn.lock
index edc5ee40ad7a..56a4bbb1a1f1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8274,10 +8274,10 @@ min-indent@^1.0.0:
   resolved "https://registry.yarnpkg.com/min-indent/-/min-indent-1.0.1.tgz#a63f681673b30571fbe8bc25686ae746eefa9869"
   integrity sha512-I9jwMn07Sy/IwOj3zVkVik2JTvgpaykDZEigL6Rx6N9LbMywwUSMtxET+7lVoDLLd3O3IXwJwvuuns8UB/HeAg==
 
-mini-css-extract-plugin@1.3.9:
-  version "1.3.9"
-  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.3.9.tgz#47a32132b0fd97a119acd530e8421e8f6ab16d5e"
-  integrity sha512-Ac4s+xhVbqlyhXS5J/Vh/QXUz3ycXlCqoCPpg0vdfhsIBH9eg/It/9L1r1XhSCH737M1lqcWnMuWL13zcygn5A==
+mini-css-extract-plugin@1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/mini-css-extract-plugin/-/mini-css-extract-plugin-1.4.0.tgz#c8e571c4b6d63afa56c47260343adf623349c473"
+  integrity sha512-DyQr5DhXXARKZoc4kwvCvD95kh69dUupfuKOmBUqZ4kBTmRaRZcU32lYu3cLd6nEGXhQ1l7LzZ3F/CjItaY6VQ==
   dependencies:
     loader-utils "^2.0.0"
     schema-utils "^3.0.0"