diff --git a/package-lock.json b/package-lock.json
index 0d58dc5..5204011 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -16,6 +16,25 @@
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-      "resolved": "https://registry.npmjs.org/sliced/-/sliced-0.0.5.tgz",
-      "integrity": "sha1-XtwETKTrb3gW1Qui/GPiXY/kcH8="
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/sliced/-/sliced-1.0.1.tgz",
+      "integrity": "sha1-CzpmK10Ewxd7GSa+qCsD+Dei70E="
     },
     "snapdragon": {
       "version": "0.8.2",
@@ -4061,6 +4049,15 @@
       "resolved": "https://registry.npmjs.org/source-map-url/-/source-map-url-0.4.0.tgz",
       "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM="
     },
+    "sparse-bitfield": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
+      "integrity": "sha1-/0rm5oZWBWuks+eSqzM004JzyhE=",
+      "optional": true,
+      "requires": {
+        "memory-pager": "^1.0.2"
+      }
+    },
     "split-string": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/split-string/-/split-string-3.1.0.tgz",
@@ -4312,7 +4309,8 @@
     "string_decoder": {
       "version": "0.10.31",
       "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
-      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+      "dev": true
     },
     "subarg": {
       "version": "1.0.0",
@@ -4433,6 +4431,14 @@
         }
       }
     },
+    "tr46": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-2.1.0.tgz",
+      "integrity": "sha512-15Ih7phfcdP5YxqiB+iDtLoaTz4Nd35+IiAv0kQ5FNKHzXgdWqPoTIqEDDJmXceQt4JZk6lVPT8lnDlPpGDppw==",
+      "requires": {
+        "punycode": "^2.1.1"
+      }
+    },
     "tty-browserify": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/tty-browserify/-/tty-browserify-0.0.1.tgz",
@@ -4601,6 +4607,20 @@
         "indexof": "0.0.1"
       }
     },
+    "webidl-conversions": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-6.1.0.tgz",
+      "integrity": "sha512-qBIvFLGiBpLjfwmYAaHPXsn+ho5xZnGvyGvsarywGNc8VyQJUMHJ8OBKGGrPER0okBeMDaan4mNBlgBROxuI8w=="
+    },
+    "whatwg-url": {
+      "version": "9.1.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-9.1.0.tgz",
+      "integrity": "sha512-CQ0UcrPHyomtlOCot1TL77WyMIm/bCwrJ2D6AOKGwEczU9EpyoqAokfqrf/MioU9kHcMsmJZcg1egXix2KYEsA==",
+      "requires": {
+        "tr46": "^2.1.0",
+        "webidl-conversions": "^6.1.0"
+      }
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
diff --git a/package.json b/package.json
index 95074ce..2b86790 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "marked": "0.3.5",
     "method-override": "latest",
     "moment": "2.15.1",
-    "mongoose": "4.2.4",
+    "mongoose": "6.0.4",
     "morgan": "latest",
     "ms": "^0.7.1",
     "npmconf": "0.0.24",