diff --git a/backend/package-lock.json b/backend/package-lock.json
index 97e2bcc..d19dd98 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -5,18 +5,33 @@
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-      "integrity": "sha1-hiRnWMfdbSGmR0/whKR0DsBesh8=",
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-        "negotiator": "0.6.1"
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@@ -43,6 +58,12 @@
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@@ -75,6 +96,16 @@
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+      "resolved": "https://registry.npmjs.org/cli/-/cli-1.0.1.tgz",
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+      "dev": true,
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       "integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs="
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+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
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+      "resolved": "https://registry.npmjs.org/console-browserify/-/console-browserify-1.1.0.tgz",
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+      "dev": true,
+      "requires": {
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-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
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@@ -111,14 +170,20 @@
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-      "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
+      "version": "0.4.2",
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-      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+      "integrity": "sha512-QADzlaHc8icV8I7vbaJXJwod9HWYp8uCqf1xa4OfNu1T7JVxQIrUgOWtHdNDtPiywmFbiS12VjotIXLrKM3orQ=="
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+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.3.tgz",
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@@ -134,6 +199,12 @@
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+    "date-now": {
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@@ -150,7 +221,56 @@
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+        "entities": "^2.0.0"
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+      "dev": true,
+      "requires": {
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@@ -165,58 +285,162 @@
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-      "integrity": "sha512-hSMUZrsPa/I09VYFJwa627JJkNs0NrfL1Uzuup+GqHfToR2KcsXFymXSV90hoyw3M+msjFuQly+YzIH/q0MGlQ==",
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
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-        "encodeurl": "1.0.2",
-        "escape-html": "1.0.3",
-        "parseurl": "1.3.2",
-        "send": "0.16.1"
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
       }
     },
     "setprototypeof": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.0.tgz",
-      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ=="
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+      "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
     },
     "sliced": {
       "version": "1.0.1",
@@ -4435,6 +4821,23 @@
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
       "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4="
     },
+    "string_decoder": {
+      "version": "0.10.31",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+      "integrity": "sha512-ev2QzSzWPYmy9GuqfIVildA4OdcGLeFZQrq5ys6RtiuF+RQQiZWr8TZNyAcuVXyQRYfEO+MsoB/1BuQVhOJuoQ==",
+      "dev": true
+    },
+    "strip-json-comments": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-1.0.4.tgz",
+      "integrity": "sha512-AOPG8EBc5wAikaG1/7uFCNFJwnKOuQwFTpYBdTW6OvWHeZBQBrAA/amefHGrEiOnCPcLFZK6FUPtWVKpQVIRgg==",
+      "dev": true
+    },
+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
+    },
     "type-is": {
       "version": "1.6.16",
       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.16.tgz",
@@ -4461,7 +4864,7 @@
     "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": "3.1.0",
@@ -4493,6 +4896,12 @@
         }
       }
     },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "dev": true
+    },
     "xml2js": {
       "version": "0.4.17",
       "resolved": "https://registry.npmjs.org/xml2js/-/xml2js-0.4.17.tgz",
diff --git a/backend/package.json b/backend/package.json
index 1de94da..d715374 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -27,7 +27,7 @@
     "body-parser": "^1.18.2",
     "cors": "^2.8.4",
     "dotenv": "^5.0.0",
-    "express": "^4.16.2",
+    "express": "^4.17.3",
     "hat": "0.0.3",
     "mongoose": "^5.0.6",
     "npm": "^5.8.0",