diff --git a/package-lock.json b/package-lock.json
index 06b9541..939c507 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -63,6 +63,12 @@
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+        "p-try": {
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+          "dev": true
+        },
+        "pump": {
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+          "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
+          "integrity": "sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==",
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-            "is-utf8": "^0.2.0"
+            "end-of-stream": "^1.1.0",
+            "once": "^1.3.1"
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+        "schema-utils": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-1.0.0.tgz",
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@@ -8977,50 +9050,47 @@
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-          "integrity": "sha1-eC7CHvQDNF+DCoCMo9UTr1YGUgg=",
+          "version": "12.0.2",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.2.tgz",
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-            "cliui": "^3.2.0",
-            "decamelize": "^1.1.1",
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+            "decamelize": "^2.0.0",
+            "find-up": "^3.0.0",
             "get-caller-file": "^1.0.1",
-            "os-locale": "^1.4.0",
-            "read-pkg-up": "^1.0.1",
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             "require-main-filename": "^1.0.1",
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-            "which-module": "^1.0.0",
-            "y18n": "^3.2.1",
-            "yargs-parser": "^4.2.0"
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1 || ^4.0.0",
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-          "integrity": "sha1-KczqwNxPA8bIe0qfIX3RjJ90hxw=",
+          "version": "10.1.0",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
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           "dev": true,
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-            "camelcase": "^3.0.0"
+            "camelcase": "^4.1.0"
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         }
       }
     },
+    "webpack-log": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/webpack-log/-/webpack-log-2.0.0.tgz",
+      "integrity": "sha512-cX8G2vR/85UYG59FgkoMamwHUIkSSlV3bBMRsbxVXVUk2j6NleCKjQ/WE9eYg9WY4w25O9w8wKP4rzNZFmUcUg==",
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+      "requires": {
+        "ansi-colors": "^3.0.0",
+        "uuid": "^3.3.2"
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     "webpack-sources": {
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       "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.4.3.tgz",
@@ -9122,6 +9192,12 @@
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       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
+    "xregexp": {
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+      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.0.0.tgz",
+      "integrity": "sha512-PHyM+sQouu7xspQQwELlGwwd05mXUFqwFYfqPO0cC7x4fxyHnnuetmQr6CjJiafIDoH4MogHb9dOoJzR/Y4rFg==",
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diff --git a/package.json b/package.json
index 5cec22d..3af524d 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
     "sass-loader": "^6.0.3",
     "style-loader": "^0.16.1",
     "webpack": "^3.3.0",
-    "webpack-dev-server": "^2.11.5",
+    "webpack-dev-server": "^3.1.11",
     "yaml-loader": "^0.5.0"
   }
 }