diff --git a/package.json b/package.json
index 8d198e5d6a4c..09f2912b6c18 100644
--- a/package.json
+++ b/package.json
@@ -213,7 +213,7 @@
     "tar": "^6.0.0",
     "temp": "^0.9.0",
     "terser": "5.0.0",
-    "terser-webpack-plugin": "3.1.0",
+    "terser-webpack-plugin": "4.0.0",
     "through2": "^4.0.0",
     "tree-kill": "1.2.2",
     "ts-api-guardian": "0.5.0",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index 2594a092050f..67f73283ec7d 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -63,7 +63,7 @@
     "stylus": "0.54.8",
     "stylus-loader": "3.0.2",
     "terser": "5.0.0",
-    "terser-webpack-plugin": "3.1.0",
+    "terser-webpack-plugin": "4.0.0",
     "tree-kill": "1.2.2",
     "webpack": "4.44.1",
     "webpack-dev-middleware": "3.7.2",
diff --git a/yarn.lock b/yarn.lock
index ed87faad92e1..b136a7a4d592 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -12467,10 +12467,10 @@ term-size@^2.1.0:
   resolved "https://registry.yarnpkg.com/term-size/-/term-size-2.2.0.tgz#1f16adedfe9bdc18800e1776821734086fcc6753"
   integrity sha512-a6sumDlzyHVJWb8+YofY4TW112G6p2FCPEAFk+59gIYHv3XHRhm9ltVQ9kli4hNWeQBwSpe8cRN25x0ROunMOw==
 
-terser-webpack-plugin@3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-3.1.0.tgz#91e6d39571460ed240c0cf69d295bcf30ebf98cb"
-  integrity sha512-cjdZte66fYkZ65rQ2oJfrdCAkkhJA7YLYk5eGOcGCSGlq0ieZupRdjedSQXYknMPo2IveQL+tPdrxUkERENCFA==
+terser-webpack-plugin@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-4.0.0.tgz#d371fe78312c47d33452e465a1096db893613e78"
+  integrity sha512-Gb/bmPMavJsDTYiIocakp9OJhrIBnYrWa5VM0Bb2RngWmszeQUN1xFNh2E8Re+9Cj3/sPrA50Jj/q0nzgLAUuw==
   dependencies:
     cacache "^15.0.5"
     find-cache-dir "^3.3.1"
@@ -12479,7 +12479,7 @@ terser-webpack-plugin@3.1.0:
     schema-utils "^2.6.6"
     serialize-javascript "^4.0.0"
     source-map "^0.6.1"
-    terser "^4.8.0"
+    terser "^5.0.0"
     webpack-sources "^1.4.3"
 
 terser-webpack-plugin@^1.4.3:
@@ -12497,7 +12497,7 @@ terser-webpack-plugin@^1.4.3:
     webpack-sources "^1.4.0"
     worker-farm "^1.7.0"
 
-terser@5.0.0:
+terser@5.0.0, terser@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/terser/-/terser-5.0.0.tgz#269640e4e92f15d628de1e5f01c4c61e1ba3d765"
   integrity sha512-olH2DwGINoSuEpSGd+BsPuAQaA3OrHnHnFL/rDB2TVNc3srUbz/rq/j2BlF4zDXI+JqAvGr86bIm1R2cJgZ3FA==
@@ -12515,15 +12515,6 @@ terser@^4.1.2, terser@^4.3.8:
     source-map "~0.6.1"
     source-map-support "~0.5.12"
 
-terser@^4.8.0:
-  version "4.8.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.0.tgz#63056343d7c70bb29f3af665865a46fe03a0df17"
-  integrity sha512-EAPipTNeWsb/3wLPeup1tVPaXfIaU68xMnVdPafIL1TV05OhASArYyIfFvnvJCNrR2NIOvDVNNTFRa+Re2MWyw==
-  dependencies:
-    commander "^2.20.0"
-    source-map "~0.6.1"
-    source-map-support "~0.5.12"
-
 test-exclude@^5.2.2:
   version "5.2.3"
   resolved "https://registry.yarnpkg.com/test-exclude/-/test-exclude-5.2.3.tgz#c3d3e1e311eb7ee405e092dac10aefd09091eac0"