diff --git a/package-lock.json b/package-lock.json
index 7bac88b..721437a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -320,6 +320,11 @@
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@@ -2402,6 +2433,14 @@
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@@ -2720,10 +2759,20 @@
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       "integrity": "sha1-oVe6QC2iTpv5V/mqadUk7tQpAaY="
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+    "tweetnacl": {
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+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha512-KXXFFdAbFXY4geFIwoyNK+f5Z1b7swfXABfL7HXCmoIWMKU3dmS26672A4EeQtDzLKy7SXmfBu51JolvEKwtGA==",
+      "optional": true
+    },
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       "resolved": "https://registry.npmjs.org/type/-/type-1.2.0.tgz",
@@ -10110,25 +10252,25 @@
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-      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.16.tgz",
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+      "version": "1.6.18",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
+      "integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
       "requires": {
         "media-typer": "0.3.0",
-        "mime-types": "~2.1.18"
+        "mime-types": "~2.1.24"
       },
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         "mime-db": {
-          "version": "1.37.0",
-          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.37.0.tgz",
-          "integrity": "sha512-R3C4db6bgQhlIhPU48fUtdVmKnflq+hRdad7IyKhtFj06VPNVdk2RhiYL3UjQIlso8L+YxAtFkobT0VK+S/ybg=="
+          "version": "1.52.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+          "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg=="
         },
         "mime-types": {
-          "version": "2.1.21",
-          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.21.tgz",
-          "integrity": "sha512-3iL6DbwpyLzjR3xHSFNFeb9Nz/M8WDkX33t1GFQnFOllWk8pOrh/LSrB5OXlnlW5P9LH73X6loW/eogc+F5lJg==",
+          "version": "2.1.35",
+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
+          "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
           "requires": {
-            "mime-db": "~1.37.0"
+            "mime-db": "1.52.0"
           }
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@@ -10255,7 +10397,7 @@
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       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
-      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ=="
     },
     "unset-value": {
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@@ -10384,7 +10526,7 @@
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
     },
     "uuid": {
       "version": "3.2.1",
@@ -12017,7 +12159,8 @@
         },
         "kind-of": {
           "version": "6.0.2",
-          "resolved": ""
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA=="
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         "lcid": {
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diff --git a/package.json b/package.json
index ebe475d..ed3da03 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "css-loader": "^0.28.9",
     "eslint": "^4.16.0",
     "eslint-plugin-react": "^7.5.1",
-    "express": "^4.16.4",
+    "express": "^4.17.3",
     "extract-text-webpack-plugin": "^3.0.2",
     "file-loader": "^1.1.6",
     "html-webpack-plugin": "^2.30.1",