diff --git a/packages/angular_devkit/build_optimizer/package.json b/packages/angular_devkit/build_optimizer/package.json
index b471944412f2..98405e58d610 100644
--- a/packages/angular_devkit/build_optimizer/package.json
+++ b/packages/angular_devkit/build_optimizer/package.json
@@ -13,7 +13,7 @@
     "source-map": "0.7.3",
     "tslib": "2.2.0",
     "typescript": "4.2.4",
-    "webpack-sources": "2.2.0"
+    "webpack-sources": "2.3.1"
   },
   "peerDependencies": {
     "webpack": "^4.0.0 || ^5.30.0"