diff --git a/node_modules/diff/package.json b/node_modules/diff/package.json
index 4ff484e883..70ce1cf20b 100644
--- a/node_modules/diff/package.json
+++ b/node_modules/diff/package.json
@@ -46,7 +46,7 @@
     "grunt-cli": "^1.3.2",
     "grunt-contrib-clean": "^2.0.0",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-uglify": "^4.0.0",
+    "grunt-contrib-uglify": "^5.2.1",
     "grunt-contrib-watch": "^1.1.0",
     "grunt-eslint": "^21.0.0",
     "grunt-exec": "^3.0.0",
@@ -55,19 +55,19 @@
     "grunt-mocha-test": "^0.13.3",
     "grunt-webpack": "^3.1.3",
     "istanbul": "github:kpdecker/istanbul",
-    "karma": "^3.1.4",
+    "karma": "^5.0.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-mocha": "^1.3.0",
     "karma-mocha-reporter": "^2.0.0",
-    "karma-sauce-launcher": "^2.0.2",
+    "karma-sauce-launcher": "^4.1.5",
     "karma-sourcemap-loader": "^0.3.6",
     "karma-webpack": "^3.0.5",
     "mocha": "^5.2.0",
     "rollup": "^1.0.2",
     "rollup-plugin-babel": "^4.2.0",
     "semver": "^5.6.0",
-    "webpack": "^4.28.3",
-    "webpack-dev-server": "^3.1.14"
+    "webpack": "^5.0.0",
+    "webpack-dev-server": "^4.0.0"
   },
   "optionalDependencies": {}
 }
\ No newline at end of file