diff --git a/package-lock.json b/package-lock.json
index d0aceaa..c3d7586 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35,13 +35,30 @@
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@@ -1718,9 +1774,9 @@
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-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ=",
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@@ -2311,15 +2378,15 @@
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@@ -4284,7 +4479,8 @@
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@@ -4335,7 +4531,8 @@
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@@ -4350,6 +4547,7 @@
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       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
       "dev": true
     },
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@@ -12781,6 +13082,30 @@
           "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
           "dev": true
         },
+        "body-parser": {
+          "version": "1.18.2",
+          "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.18.2.tgz",
+          "integrity": "sha512-XIXhPptoLGNcvFyyOzjNXCjDYIbYj4iuXO0VU9lM0f3kYdG0ar5yg7C+pIc3OyoTlZXDu5ObpLTmS2Cgp89oDg==",
+          "dev": true,
+          "requires": {
+            "bytes": "3.0.0",
+            "content-type": "~1.0.4",
+            "debug": "2.6.9",
+            "depd": "~1.1.1",
+            "http-errors": "~1.6.2",
+            "iconv-lite": "0.4.19",
+            "on-finished": "~2.3.0",
+            "qs": "6.5.1",
+            "raw-body": "2.3.2",
+            "type-is": "~1.6.15"
+          }
+        },
+        "bytes": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.0.0.tgz",
+          "integrity": "sha512-pMhOfFDPiv9t5jjIXkHosWmkSyQbvsgEVNkz0ERHbuLh2T/7j4Mqqpz523Fe8MVY89KC6Sh/QfS2sM+SjgFDcw==",
+          "dev": true
+        },
         "chalk": {
           "version": "1.1.3",
           "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
@@ -12794,6 +13119,95 @@
             "supports-color": "2.0.0"
           }
         },
+        "content-disposition": {
+          "version": "0.5.2",
+          "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.2.tgz",
+          "integrity": "sha512-kRGRZw3bLlFISDBgwTSA1TMBFN6J6GWDeubmDE3AF+3+yXL8hTWv8r5rkLbqYXY4RjPk/EzHnClI3zQf1cFmHA==",
+          "dev": true
+        },
+        "cookie": {
+          "version": "0.3.1",
+          "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
+          "integrity": "sha512-+IJOX0OqlHCszo2mBUq+SrEbCj6w7Kpffqx60zYbPTFaO4+yYgRjHwcZNpWvaTylDHaV7PPmBHzSecZiMhtPgw==",
+          "dev": true
+        },
+        "express": {
+          "version": "4.16.1",
+          "resolved": "https://registry.npmjs.org/express/-/express-4.16.1.tgz",
+          "integrity": "sha512-STB7LZ4N0L+81FJHGla2oboUHTk4PaN1RsOkoRh9OSeEKylvF5hwKYVX1xCLFaCT7MD0BNG/gX2WFMLqY6EMBw==",
+          "dev": true,
+          "requires": {
+            "accepts": "~1.3.4",
+            "array-flatten": "1.1.1",
+            "body-parser": "1.18.2",
+            "content-disposition": "0.5.2",
+            "content-type": "~1.0.4",
+            "cookie": "0.3.1",
+            "cookie-signature": "1.0.6",
+            "debug": "2.6.9",
+            "depd": "~1.1.1",
+            "encodeurl": "~1.0.1",
+            "escape-html": "~1.0.3",
+            "etag": "~1.8.1",
+            "finalhandler": "1.1.0",
+            "fresh": "0.5.2",
+            "merge-descriptors": "1.0.1",
+            "methods": "~1.1.2",
+            "on-finished": "~2.3.0",
+            "parseurl": "~1.3.2",
+            "path-to-regexp": "0.1.7",
+            "proxy-addr": "~2.0.2",
+            "qs": "6.5.1",
+            "range-parser": "~1.2.0",
+            "safe-buffer": "5.1.1",
+            "send": "0.16.1",
+            "serve-static": "1.13.1",
+            "setprototypeof": "1.1.0",
+            "statuses": "~1.3.1",
+            "type-is": "~1.6.15",
+            "utils-merge": "1.0.1",
+            "vary": "~1.1.2"
+          }
+        },
+        "finalhandler": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.0.tgz",
+          "integrity": "sha512-ejnvM9ZXYzp6PUPUyQBMBf0Co5VX2gr5H2VQe2Ui2jWXNlxv+PYZo8wpAymJNJdLsG1R4p+M4aynF8KuoUEwRw==",
+          "dev": true,
+          "requires": {
+            "debug": "2.6.9",
+            "encodeurl": "~1.0.1",
+            "escape-html": "~1.0.3",
+            "on-finished": "~2.3.0",
+            "parseurl": "~1.3.2",
+            "statuses": "~1.3.1",
+            "unpipe": "~1.0.0"
+          }
+        },
+        "iconv-lite": {
+          "version": "0.4.19",
+          "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.19.tgz",
+          "integrity": "sha512-oTZqweIP51xaGPI4uPa56/Pri/480R+mo7SeU+YETByQNhDG55ycFyNLIgta9vXhILrxXDmF7ZGhqZIcuN0gJQ==",
+          "dev": true
+        },
+        "raw-body": {
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.3.2.tgz",
+          "integrity": "sha512-Ss0DsBxqLxCmQkfG5yazYhtbVVTJqS9jTsZG2lhrNwqzOk2SUC7O/NB/M//CkEBqsrtmlNgJCPccJGuYSFr6Vg==",
+          "dev": true,
+          "requires": {
+            "bytes": "3.0.0",
+            "http-errors": "1.6.2",
+            "iconv-lite": "0.4.19",
+            "unpipe": "1.0.0"
+          }
+        },
+        "setprototypeof": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
+          "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ==",
+          "dev": true
+        },
         "supports-color": {
           "version": "2.0.0",
           "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
diff --git a/package.json b/package.json
index c4fff3a..6503e20 100644
--- a/package.json
+++ b/package.json
@@ -41,7 +41,7 @@
     "eslint-plugin-html": "^3.0.0",
     "eslint-plugin-import": "^2.2.0",
     "eventsource-polyfill": "^0.9.6",
-    "express": "^4.14.1",
+    "express": "^4.17.3",
     "extract-text-webpack-plugin": "^2.0.0",
     "file-loader": "^0.11.1",
     "friendly-errors-webpack-plugin": "^1.1.3",