diff --git a/package-lock.json b/package-lock.json
index 72ccd67..c731a27 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -297,6 +297,11 @@
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-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
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@@ -2364,6 +2418,15 @@
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@@ -2569,6 +2632,14 @@
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-      "integrity": "sha1-Cs7ehJ7X3RzMMsgRuxG5RNTykjI=",
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@@ -2799,6 +2870,34 @@
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@@ -2883,149 +2987,46 @@
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+            "find-up": "^3.0.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^3.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
+            "yargs-parser": "^10.1.0"
+          }
+        },
+        "yargs-parser": {
+          "version": "10.1.0",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+          "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+          "requires": {
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       }
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+    "webpack-log": {
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+      "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
+      "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
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     "webpack-sources": {
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       "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.4.3.tgz",
@@ -8362,6 +8633,11 @@
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       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
+    "xregexp": {
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diff --git a/package.json b/package.json
index 6401445..3bb12fe 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
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     "validator": "^8.0.0",
     "webpack": "^3.1.0",
-    "webpack-dev-server": "^2.5.1"
+    "webpack-dev-server": "^3.1.11"
   },
   "devDependencies": {
     "@babel/plugin-proposal-class-properties": "^7.8.3"