diff --git a/package-lock.json b/package-lock.json
index bde1c40..cacc107 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -15683,7 +16413,7 @@
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+                "is-extendable": "^0.1.0"
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-            "is-number": "3.0.0",
-            "repeat-string": "1.6.1",
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@@ -15715,49 +16451,38 @@
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-          "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
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-              "dev": true,
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-          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
-          "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
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-              "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
-              "dev": true,
-              "requires": {
-                "is-buffer": "1.1.5"
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+            "kind-of": "^6.0.0"
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+        "is-descriptor": {
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+          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
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@@ -15766,7 +16491,7 @@
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@@ -15775,7 +16500,7 @@
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@@ -15786,6 +16511,12 @@
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+        "json-schema-traverse": {
+          "version": "0.4.1",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
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           "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
@@ -15798,30 +16529,36 @@
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-            "regex-not": "1.0.2",
-            "snapdragon": "0.8.2",
-            "to-regex": "3.0.2"
+            "arr-diff": "^4.0.0",
+            "array-unique": "^0.3.2",
+            "braces": "^2.3.1",
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "extglob": "^2.0.4",
+            "fragment-cache": "^0.2.1",
+            "kind-of": "^6.0.2",
+            "nanomatch": "^1.2.9",
+            "object.pick": "^1.3.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
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-          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-0.4.5.tgz",
-          "integrity": "sha512-yYrjb9TX2k/J1Y5UNy3KYdZq10xhYcF8nMpAW6o3hy6Q8WSIEf9lJHG/ePnOBfziPM3fvQwfOwa13U/Fh8qTfA==",
+          "version": "0.4.7",
+          "resolved": "https://registry.npmjs.org/schema-utils/-/schema-utils-0.4.7.tgz",
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           "requires": {
-            "ajv": "6.4.0",
-            "ajv-keywords": "3.1.0"
+            "ajv": "^6.1.0",
+            "ajv-keywords": "^3.1.0"
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+        },
+        "tapable": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/tapable/-/tapable-1.1.0.tgz",
+          "integrity": "sha512-IlqtmLVaZA2qab8epUXbVWRn3aB1imbDMJtjB3nu4X0NqPkcY/JH9ZtCBWKHWPxs8Svi9tyo8w2dBoi07qZbBA==",
+          "dev": true
         }
       }
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@@ -16480,21 +17217,15 @@
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-      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.1.0.tgz",
-      "integrity": "sha512-aqYp18kPphgoO5c/+NaUvEeACtZjMESmDChuD3NBciVpah3XpMEU9VAAtIaB1BsfJWWTSdv8Vv1m3T0aRk2dUw==",
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.3.0.tgz",
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       "dev": true,
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-        "source-list-map": "2.0.0",
-        "source-map": "0.6.1"
+        "source-list-map": "^2.0.0",
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@@ -16586,7 +17317,7 @@
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       "dev": true,
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-        "errno": "0.1.7"
+        "errno": "~0.1.7"
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@@ -16595,7 +17326,7 @@
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           "dev": true,
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-            "prr": "1.0.1"
+            "prr": "~1.0.1"
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diff --git a/package.json b/package.json
index f5b48de..69fd340 100644
--- a/package.json
+++ b/package.json
@@ -57,7 +57,7 @@
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     "karma-webpack": "^3.0.0",
     "phantomjs-prebuilt": "^2.1.16",
-    "webpack": "^4.4.1",
+    "webpack": "^4.20.2",
     "webpack-cli": "^2.0.13",
     "webpack-serve": "^0.3.1"
   }