diff --git a/src/optimize/base_optimizer.js b/src/optimize/base_optimizer.js
index efff7f0aa2b46..d9df2a1955df3 100644
--- a/src/optimize/base_optimizer.js
+++ b/src/optimize/base_optimizer.js
@@ -256,6 +256,7 @@ export default class BaseOptimizer {
       profile: this.profile || false,
 
       output: {
+        futureEmitAssets: true, // TODO: remove on webpack 5
         path: this.uiBundles.getWorkingDir(),
         filename: '[name].bundle.js',
         sourceMapFilename: '[file].map',
diff --git a/src/optimize/dynamic_dll_plugin/dll_config_model.js b/src/optimize/dynamic_dll_plugin/dll_config_model.js
index c7ab2fe30dd14..3e31b0a7a2ead 100644
--- a/src/optimize/dynamic_dll_plugin/dll_config_model.js
+++ b/src/optimize/dynamic_dll_plugin/dll_config_model.js
@@ -48,6 +48,7 @@ function generateDLL(config) {
     entry: dllEntry,
     context: dllContext,
     output: {
+      futureEmitAssets: true, // TODO: remove on webpack 5
       filename: dllBundleFilename,
       path: dllOutputPath,
       publicPath: dllPublicPath,
diff --git a/yarn.lock b/yarn.lock
index 6e398bf4a9357..4635114018039 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -16342,12 +16342,12 @@ icss-replace-symbols@^1.1.0:
   resolved "https://registry.yarnpkg.com/icss-replace-symbols/-/icss-replace-symbols-1.1.0.tgz#06ea6f83679a7749e386cfe1fe812ae5db223ded"
   integrity sha1-Bupvg2ead0njhs/h/oEq5dsiPe0=
 
-icss-utils@^4.0.0, icss-utils@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/icss-utils/-/icss-utils-4.1.1.tgz#21170b53789ee27447c2f47dd683081403f9a467"
-  integrity sha512-4aFq7wvWyMHKgxsH8QQtGpvbASCf+eM3wPRLI6R+MgAnTCZ6STYsRvttLvRWK0Nfif5piF394St3HeJDaljGPA==
+icss-utils@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/icss-utils/-/icss-utils-4.0.0.tgz#d52cf4bcdcfa1c45c2dbefb4ffdf6b00ef608098"
+  integrity sha512-bA/xGiwWM17qjllIs9X/y0EjsB7e0AV08F3OL8UPsoNkNRibIuu8f1eKTnQ8QO1DteKKTxTUAn+IEWUToIwGOA==
   dependencies:
-    postcss "^7.0.14"
+    postcss "^7.0.5"
 
 icss-utils@^4.1.0:
   version "4.1.0"
@@ -16356,6 +16356,13 @@ icss-utils@^4.1.0:
   dependencies:
     postcss "^7.0.14"
 
+icss-utils@^4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/icss-utils/-/icss-utils-4.1.1.tgz#21170b53789ee27447c2f47dd683081403f9a467"
+  integrity sha512-4aFq7wvWyMHKgxsH8QQtGpvbASCf+eM3wPRLI6R+MgAnTCZ6STYsRvttLvRWK0Nfif5piF394St3HeJDaljGPA==
+  dependencies:
+    postcss "^7.0.14"
+
 idx@^2.5.6:
   version "2.5.6"
   resolved "https://registry.yarnpkg.com/idx/-/idx-2.5.6.tgz#1f824595070100ae9ad585c86db08dc74f83a59d"