diff --git a/packages/stark-build/package-lock.json b/packages/stark-build/package-lock.json
index 5bb07f83cb..b7279cf4a0 100644
--- a/packages/stark-build/package-lock.json
+++ b/packages/stark-build/package-lock.json
@@ -61,7 +61,7 @@
         "tree-kill": "1.2.0",
         "uglifyjs-webpack-plugin": "1.3.0",
         "url-loader": "1.1.1",
-        "webpack": "4.20.2",
+        "webpack": "4.21.0",
         "webpack-dev-middleware": "3.4.0",
         "webpack-dev-server": "3.1.9",
         "webpack-merge": "4.1.4",
@@ -11129,9 +11129,9 @@
       }
     },
     "webpack": {
-      "version": "4.20.2",
-      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.20.2.tgz",
-      "integrity": "sha512-75WFUMblcWYcocjSLlXCb71QuGyH7egdBZu50FtBGl2Nso8CK3Ej+J7bTZz2FPFq5l6fzCisD9modB7t30ikuA==",
+      "version": "4.21.0",
+      "resolved": "https://registry.npmjs.org/webpack/-/webpack-4.21.0.tgz",
+      "integrity": "sha512-CGBeop4AYR0dcmk9Afl33qQULwTHQCXQPAIBTHMJoy9DpY8FPUDna/NUlAGTr5o5y9QC901Ww3wCY4wNo1X9Lw==",
       "requires": {
         "@webassemblyjs/ast": "1.7.8",
         "@webassemblyjs/helper-module-context": "1.7.8",
diff --git a/packages/stark-build/package.json b/packages/stark-build/package.json
index 075273274b..b544ed9479 100644
--- a/packages/stark-build/package.json
+++ b/packages/stark-build/package.json
@@ -60,7 +60,7 @@
     "tslint-sonarts": "1.8.0",
     "uglifyjs-webpack-plugin": "2.0.1",
     "url-loader": "1.1.1",
-    "webpack": "4.20.2",
+    "webpack": "4.21.0",
     "webpack-cli": "3.1.2",
     "webpack-dev-server": "3.1.9",
     "webpack-merge": "4.1.4",