diff --git a/packages/react-scripts/package.json b/packages/react-scripts/package.json
index e5008ca406d..d0d05defa5b 100644
--- a/packages/react-scripts/package.json
+++ b/packages/react-scripts/package.json
@@ -65,9 +65,9 @@
     "svgr": "1.9.2",
     "sw-precache-webpack-plugin": "0.11.5",
     "thread-loader": "1.1.5",
-    "uglifyjs-webpack-plugin": "1.2.5",
+    "uglifyjs-webpack-plugin": "2.0.0",
     "url-loader": "1.0.1",
-    "webpack": "4.8.3",
+    "webpack": "4.26.0",
     "webpack-dev-server": "3.1.4",
     "webpack-manifest-plugin": "2.0.3",
     "whatwg-fetch": "2.0.4"