diff --git a/package-lock.json b/package-lock.json
index fd7e4f1..d11b200 100644
--- a/package-lock.json
+++ b/package-lock.json
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+            "string-width": "^3.0.0",
+            "strip-ansi": "^5.0.0"
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+          "dependencies": {
+            "strip-ansi": {
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+              "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
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+              "requires": {
+                "ansi-regex": "^4.1.0"
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+        },
+        "yargs": {
+          "version": "13.3.2",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.2.tgz",
+          "integrity": "sha512-AX3Zw5iPruN5ie6xGRIDgqkT+ZhnRlZMLMHAs8tg7nRruy2Nb+i5o9bwghAogtM08q1dpr2LVoS8KSTMYpWXUw==",
+          "requires": {
+            "cliui": "^5.0.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^2.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^3.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^13.1.2"
+          }
+        },
+        "yargs-parser": {
+          "version": "13.1.2",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
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+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
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@@ -13164,11 +13453,12 @@
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-      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.0.tgz",
-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.4",
+      "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.4.tgz",
+      "integrity": "sha512-b17KeDIQVjvb0ssuSDF2cYXSg2iztliJ4B9WdsuB6J952qCPKmnVq4DyW5motImXHDC1cBT/1UezrJVsKw5zjg==",
       "requires": {
-        "http-parser-js": ">=0.4.0",
+        "http-parser-js": ">=0.5.1",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
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@@ -13228,6 +13518,7 @@
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       "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "dev": true,
       "requires": {
         "string-width": "^1.0.1",
         "strip-ansi": "^3.0.1"
@@ -13237,6 +13528,7 @@
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           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "dev": true,
           "requires": {
             "number-is-nan": "^1.0.0"
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@@ -13245,6 +13537,7 @@
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           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "dev": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -13267,6 +13560,14 @@
         "mkdirp": "^0.5.1"
       }
     },
+    "ws": {
+      "version": "6.2.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.2.tgz",
+      "integrity": "sha512-zmhltoSR8u1cnDsD43TX59mzoMZsLKqUweyYBAIvTngR3shc0W6aOZylZmq/7hqyVxPdi+5Ud2QInblgyE72fw==",
+      "requires": {
+        "async-limiter": "~1.0.0"
+      }
+    },
     "xtend": {
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       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
@@ -13286,6 +13587,7 @@
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+      "dev": true,
       "requires": {
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@@ -13305,6 +13607,7 @@
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+      "dev": true,
       "requires": {
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diff --git a/package.json b/package.json
index 7d4bd94..b090dc0 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
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     "styled-jsx": "^3.2.2",
     "webpack": "^4.32.0",
-    "webpack-dev-server": "^3.4.1"
+    "webpack-dev-server": "^3.11.3"
   },
   "devDependencies": {
     "@babel/core": "^7.4.5",