diff --git a/package-lock.json b/package-lock.json
index 2b962a1..1866181 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12248,9 +12248,9 @@
       }
     },
     "uglifyjs-webpack-plugin": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/uglifyjs-webpack-plugin/-/uglifyjs-webpack-plugin-1.2.2.tgz",
-      "integrity": "sha512-CG/NvzXfemUAm5Y4Guh5eEaJYHtkG7kKNpXEJHp9QpxsFVB5/qKvYWoMaq4sa99ccZ0hM3MK8vQV9XPZB4357A==",
+      "version": "1.2.4",
+      "resolved": "https://registry.npmjs.org/uglifyjs-webpack-plugin/-/uglifyjs-webpack-plugin-1.2.4.tgz",
+      "integrity": "sha512-z0IbjpW8b3O/OVn+TTZN4pI29RN1zktFBXLIzzfZ+++cUtZ1ERSlLWgpE/5OERuEUs1ijVQnpYAkSlpoVmQmSQ==",
       "dev": true,
       "requires": {
         "cacache": "10.0.4",
@@ -12260,7 +12260,7 @@
         "source-map": "0.6.1",
         "uglify-es": "3.3.9",
         "webpack-sources": "1.1.0",
-        "worker-farm": "1.5.4"
+        "worker-farm": "1.6.0"
       },
       "dependencies": {
         "source-map": {
@@ -13106,13 +13106,12 @@
       }
     },
     "worker-farm": {
-      "version": "1.5.4",
-      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.5.4.tgz",
-      "integrity": "sha512-ITyClEvcfv0ozqJl1vmWFWhvI+OIrkbInYqkEPE50wFPXj8J9Gd3FYf8+CkZJXJJsQBYe+2DvmoK9Zhx5w8W+w==",
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.6.0.tgz",
+      "integrity": "sha512-6w+3tHbM87WnSWnENBUvA2pxJPLhQUg5LKwUQHq3r+XPhIM+Gh2R5ycbwPCyuGbNg+lPgdcnQUhuC02kJCvffQ==",
       "dev": true,
       "requires": {
-        "errno": "0.1.7",
-        "xtend": "4.0.1"
+        "errno": "0.1.7"
       }
     },
     "wrap-ansi": {
diff --git a/package.json b/package.json
index b1c36ca..83b5403 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "prettier": "^1.11.1",
     "sass-loader": "^6.0.7",
     "style-loader": "^0.20.2",
-    "uglifyjs-webpack-plugin": "^1.2.2",
+    "uglifyjs-webpack-plugin": "^1.2.4",
     "url-loader": "^1.0.1",
     "webpack": "^4.1.1",
     "webpack-cli": "^2.0.11",