diff --git a/package-lock.json b/package-lock.json
index 7e75d38..f9d6d65 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,6 +23,25 @@
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@@ -756,6 +790,11 @@
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@@ -2288,16 +2269,30 @@
         "jsonify": "~0.0.0"
       }
     },
+    "sift": {
+      "version": "16.0.0",
+      "resolved": "https://registry.npmjs.org/sift/-/sift-16.0.0.tgz",
+      "integrity": "sha512-ILTjdP2Mv9V1kIxWMXeMTIRbOBrqKc4JAXmFMnFq3fKeyQ2Qwa3Dw1ubcye3vR+Y6ofA0b9gNDr/y2t6eUeIzQ=="
+    },
     "simple-concat": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.0.tgz",
       "integrity": "sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=",
       "dev": true
     },
-    "sliced": {
-      "version": "0.0.5",
-      "resolved": "https://registry.npmjs.org/sliced/-/sliced-0.0.5.tgz",
-      "integrity": "sha1-XtwETKTrb3gW1Qui/GPiXY/kcH8="
+    "smart-buffer": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-4.2.0.tgz",
+      "integrity": "sha512-94hK0Hh8rPqQl2xXc3HsaBoOXKV20MToPkcXvwbISWLEs+64sBq5kFgn2kJDHb1Pry9yrP0dxrCI9RRci7RXKg=="
+    },
+    "socks": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/socks/-/socks-2.7.0.tgz",
+      "integrity": "sha512-scnOe9y4VuiNUULJN72GrM26BNOjVsfPXI+j+98PkyEfsIXroa5ofyjT+FzGvn/xHs73U2JtoBYAVx9Hl4quSA==",
+      "requires": {
+        "ip": "^2.0.0",
+        "smart-buffer": "^4.2.0"
+      }
     },
     "source-map": {
       "version": "0.5.7",
@@ -2305,6 +2300,15 @@
       "integrity": "sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=",
       "dev": true
     },
+    "sparse-bitfield": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
+      "integrity": "sha512-kvzhi7vqKTfkh0PZU+2D2PIllw2ymqJKujUcyPMd9Y75Nv4nPbGJZXNhxsgdQab2BmlDct1YnfQCguEvHr7VsQ==",
+      "optional": true,
+      "requires": {
+        "memory-pager": "^1.0.2"
+      }
+    },
     "sprintf-js": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
@@ -2529,7 +2533,8 @@
     "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",
@@ -2612,6 +2617,14 @@
       "integrity": "sha1-fSKbH8xjfkZsoIEYCDanqr/4P0M=",
       "dev": true
     },
+    "tr46": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-3.0.0.tgz",
+      "integrity": "sha512-l7FvfAHlcmulp8kr+flpQZmVwtu7nfRV7NZujtN0OqES8EL4O4e0qqzL0DC5gAvx/ZC/9lk6rhcUwYvkBnBnYA==",
+      "requires": {
+        "punycode": "^2.1.1"
+      }
+    },
     "tty-browserify": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/tty-browserify/-/tty-browserify-0.0.1.tgz",
@@ -2714,6 +2727,20 @@
         "indexof": "0.0.1"
       }
     },
+    "webidl-conversions": {
+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-7.0.0.tgz",
+      "integrity": "sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g=="
+    },
+    "whatwg-url": {
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-11.0.0.tgz",
+      "integrity": "sha512-RKT8HExMpoYx4igMiVMY83lN6UeITKJlBQ+vR/8ZJ8OCdSiN3RwCq+9gH0+Xzj0+5IrM6i4j/6LuvzbZIQgEcQ==",
+      "requires": {
+        "tr46": "^3.0.0",
+        "webidl-conversions": "^7.0.0"
+      }
+    },
     "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 b084ef2..326d109 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": "6.4.6",
     "morgan": "latest",
     "ms": "^0.7.1",
     "npmconf": "0.0.24",