diff --git a/package-lock.json b/package-lock.json
index 33e0b7e..b7f994f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -65,6 +65,7 @@
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     "readdirp": {
       "version": "3.5.0",
       "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-3.5.0.tgz",
@@ -4345,7 +4341,7 @@
     "regexp-clone": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/regexp-clone/-/regexp-clone-0.0.1.tgz",
-      "integrity": "sha1-p8LgmJH9vzj7sQ03b7cwA+aKxYk="
+      "integrity": "sha512-tfYXF0HXEYh3AtgdjqNLQ8+tmZSAKIS7KtOjmB1laJgfbsi+Lf2RVNwLZVOE3U27yBXikzQuIXglLlakvb8Thw=="
     },
     "repeat-element": {
       "version": "1.1.3",
@@ -4419,13 +4415,6 @@
       "requires": {
         "resolve-from": "^2.0.0",
         "semver": "^5.1.0"
-      },
-      "dependencies": {
-        "semver": {
-          "version": "5.5.0",
-          "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
-          "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA=="
-        }
       }
     },
     "resolve": {
@@ -4459,7 +4448,7 @@
     "resolve-from": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-2.0.0.tgz",
-      "integrity": "sha1-lICrIOlP+h2egKgEx+oUdhGWa1c="
+      "integrity": "sha512-qpFcKaXsq8+oRoLilkwyc7zHGF5i9Q2/25NIgLQQ/+VVv9rU4qvr6nXVAw1DsnXJyQkZsR4Ytfbtg5ehfcUssQ=="
     },
     "resolve-url": {
       "version": "0.2.1",
@@ -4511,6 +4500,11 @@
       "resolved": "https://registry.npmjs.org/secure-keys/-/secure-keys-1.0.0.tgz",
       "integrity": "sha1-8MgtmKOxOah3aogIBQuCRDEIf8o="
     },
+    "semver": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
+    },
     "send": {
       "version": "0.16.1",
       "resolved": "https://registry.npmjs.org/send/-/send-0.16.1.tgz",
@@ -4602,7 +4596,7 @@
     "sliced": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/sliced/-/sliced-1.0.1.tgz",
-      "integrity": "sha1-CzpmK10Ewxd7GSa+qCsD+Dei70E="
+      "integrity": "sha512-VZBmZP8WU3sMOZm1bdgTadsQbcscK0UM8oKxKVBs4XAhUo2Xxzm/OFMGBkPusxw9xL3Uy8LrzEqGqJhclsr0yA=="
     },
     "snapdragon": {
       "version": "0.8.2",
@@ -4790,10 +4784,12 @@
     },
     "statuses": {
       "version": "1.3.1",
+      "resolved": false,
       "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4="
     },
     "string-width": {
       "version": "1.0.2",
+      "resolved": false,
       "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
       "requires": {
         "code-point-at": "^1.0.0",
@@ -4801,8 +4797,17 @@
         "strip-ansi": "^3.0.0"
       }
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
+    },
     "strip-ansi": {
       "version": "3.0.1",
+      "resolved": false,
       "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
       "requires": {
         "ansi-regex": "^2.0.0"
@@ -5091,6 +5096,7 @@
     },
     "type-is": {
       "version": "1.6.15",
+      "resolved": false,
       "integrity": "sha1-yrEPtJCeRByChC6v4a1kbIGARBA=",
       "requires": {
         "media-typer": "0.3.0",
@@ -5146,6 +5152,7 @@
     },
     "unpipe": {
       "version": "1.0.0",
+      "resolved": false,
       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
     },
     "unset-value": {
@@ -5211,8 +5218,7 @@
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "utils-merge": {
       "version": "1.0.1",
@@ -5293,6 +5299,7 @@
     },
     "wrappy": {
       "version": "1.0.2",
+      "resolved": false,
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
       "dev": true
     },
diff --git a/package.json b/package.json
index 18b2733..e351ee5 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "express-session": "^1.15.6",
     "helmet": "^4.4.1",
     "moment": "^2.21.0",
-    "mongoose": "^4.13.11",
+    "mongoose": "^4.13.21",
     "mongoose-error-helper": "0.0.2",
     "mongoose-schema-extend": "^0.2.2",
     "mongoose-slug-generator": "^1.0.4",