diff --git a/package-lock.json b/package-lock.json
index 7d993a10..dcb6e8a5 100644
--- a/package-lock.json
+++ b/package-lock.json
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+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.2.0.tgz",
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@@ -15338,15 +15368,15 @@
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-          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.0.0.tgz",
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+          "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
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-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
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+          "resolved": "https://registry.npmjs.org/semver/-/semver-6.0.0.tgz",
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@@ -15386,13 +15416,13 @@
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-          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.2.tgz",
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+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
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-            "decamelize": "^2.0.0",
+            "decamelize": "^1.2.0",
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@@ -15402,16 +15432,17 @@
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-            "yargs-parser": "^10.1.0"
+            "yargs-parser": "^11.1.1"
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-          "version": "10.1.0",
-          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
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+          "version": "11.1.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
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           "dev": true,
           "requires": {
-            "camelcase": "^4.1.0"
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
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@@ -15612,12 +15643,6 @@
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-    "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 d9839a2e..5e9ac633 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
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     "webpack-bundle-analyzer": "3.3.2",
     "webpack-cli": "3.3.2",
-    "webpack-dev-server": "3.2.1",
+    "webpack-dev-server": "3.3.1",
     "worker-plugin": "3.1.0"
   }
 }