diff --git a/package-lock.json b/package-lock.json
index 11f815e..4222e23 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -36,6 +36,7 @@
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "3.2.2",
         "longest": "1.0.1",
@@ -1527,7 +1528,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -1548,12 +1550,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
@@ -1568,17 +1572,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1695,7 +1702,8 @@
         "inherits": {
           "version": "2.0.4",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1707,6 +1715,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -1721,6 +1730,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.11"
           }
@@ -1728,12 +1738,14 @@
         "minimist": {
           "version": "1.2.5",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.9.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.1.2",
             "yallist": "3.1.1"
@@ -1752,6 +1764,7 @@
           "version": "0.5.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "1.2.5"
           }
@@ -1813,7 +1826,8 @@
         "npm-normalize-package-bin": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "npm-packlist": {
           "version": "1.4.8",
@@ -1841,7 +1855,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -1853,6 +1868,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -1930,7 +1946,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -1966,6 +1983,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
             "is-fullwidth-code-point": "1.0.0",
@@ -1985,6 +2003,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -2028,12 +2047,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -2811,7 +2832,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "lowercase-keys": {
       "version": "1.0.1",
@@ -2864,12 +2886,6 @@
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
     },
-    "memory-pager": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
-      "integrity": "sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==",
-      "optional": true
-    },
     "merge-descriptors": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
@@ -3013,38 +3029,26 @@
       "integrity": "sha512-bV7f+6l2QigeBBZSM/6yTNq4P2fNpSWj/0e7jQcy87A8e7o2nAfP/34/2ky5Vw4B9S446EtIhodAzkFCcR4dQg=="
     },
     "mongodb": {
-      "version": "3.2.7",
-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.2.7.tgz",
-      "integrity": "sha512-2YdWrdf1PJgxcCrT1tWoL6nHuk6hCxhddAAaEh8QJL231ci4+P9FLyqopbTm2Z2sAU6mhCri+wd9r1hOcHdoMw==",
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.3.2.tgz",
+      "integrity": "sha512-fqJt3iywelk4yKu/lfwQg163Bjpo5zDKhXiohycvon4iQHbrfflSAz9AIlRE6496Pm/dQKQK5bMigdVo2s6gBg==",
       "requires": {
-        "mongodb-core": "3.2.7",
-        "safe-buffer": "5.2.0"
-      }
-    },
-    "mongodb-core": {
-      "version": "3.2.7",
-      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.2.7.tgz",
-      "integrity": "sha512-WypKdLxFNPOH/Jy6i9z47IjG2wIldA54iDZBmHMINcgKOUcWJh8og+Wix76oGd7EyYkHJKssQ2FAOw5Su/n4XQ==",
-      "requires": {
-        "bson": "1.1.4",
-        "require_optional": "1.0.1",
-        "safe-buffer": "5.2.0",
-        "saslprep": "1.0.3"
+        "bson": "^1.1.1",
+        "require_optional": "^1.0.1",
+        "safe-buffer": "^5.1.2"
       }
     },
     "mongoose": {
-      "version": "5.6.11",
-      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-5.6.11.tgz",
-      "integrity": "sha512-+Mxfmu2Jcspmdqk1111BLUj5mzSLHWKVovImkjzO9GMymTwkHshsuSFmUN7ou4dWy2WR8DPSJcwU52HhnnNk8Q==",
+      "version": "5.7.5",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-5.7.5.tgz",
+      "integrity": "sha512-BZ4FxtnbTurc/wcm/hLltLdI4IDxo4nsE0D9q58YymTdZwreNzwO62CcjVtaHhmr8HmJtOInp2W/T12FZaMf8g==",
       "requires": {
-        "async": "2.6.2",
-        "bson": "1.1.4",
+        "bson": "~1.1.1",
         "kareem": "2.3.1",
-        "mongodb": "3.2.7",
-        "mongodb-core": "3.2.7",
+        "mongodb": "3.3.2",
         "mongoose-legacy-pluralize": "1.0.2",
         "mpath": "0.6.0",
-        "mquery": "3.2.1",
+        "mquery": "3.2.2",
         "ms": "2.1.2",
         "regexp-clone": "1.0.0",
         "safe-buffer": "5.1.2",
@@ -3052,19 +3056,6 @@
         "sliced": "1.0.1"
       },
       "dependencies": {
-        "async": {
-          "version": "2.6.2",
-          "resolved": "https://registry.npmjs.org/async/-/async-2.6.2.tgz",
-          "integrity": "sha512-H1qVYh1MYhEEFLsP97cVKqCGo7KfCyTt6uEWqsTBr9SO84oK9Uwbyd/yCW+6rKJLHksBNUVWZDAjfS+Ccx0Bbg==",
-          "requires": {
-            "lodash": "4.17.15"
-          }
-        },
-        "lodash": {
-          "version": "4.17.15",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A=="
-        },
         "ms": {
           "version": "2.1.2",
           "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
@@ -3109,13 +3100,13 @@
       "integrity": "sha512-i75qh79MJ5Xo/sbhxrDrPSEG0H/mr1kcZXJ8dH6URU5jD/knFxCVqVC/gVSW7GIXL/9hHWlT9haLbCXWOll3qw=="
     },
     "mquery": {
-      "version": "3.2.1",
-      "resolved": "https://registry.npmjs.org/mquery/-/mquery-3.2.1.tgz",
-      "integrity": "sha512-kY/K8QToZWTTocm0U+r8rqcJCp5PRl6e8tPmoDs5OeSO3DInZE2rAL6AYH+V406JTo8305LdASOQcxRDqHojyw==",
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/mquery/-/mquery-3.2.2.tgz",
+      "integrity": "sha512-XB52992COp0KP230I3qloVUbkLUxJIu328HBP2t2EsxSFtf4W1HPSOBWOXf1bqxK4Xbb66lfMJ+Bpfd9/yZE1Q==",
       "requires": {
         "bluebird": "3.5.1",
         "debug": "3.1.0",
-        "regexp-clone": "1.0.0",
+        "regexp-clone": "^1.0.0",
         "safe-buffer": "5.1.2",
         "sliced": "1.0.1"
       },
@@ -4309,8 +4300,8 @@
       "resolved": "https://registry.npmjs.org/require_optional/-/require_optional-1.0.1.tgz",
       "integrity": "sha512-qhM/y57enGWHAe3v/NcwML6a3/vfESLe/sGM2dII+gEO0BpKRUkWZow/tyloNqJyN6kXSl3RyyM8Ll5D/sJP8g==",
       "requires": {
-        "resolve-from": "2.0.0",
-        "semver": "5.7.1"
+        "resolve-from": "^2.0.0",
+        "semver": "^5.1.0"
       }
     },
     "resolve": {
@@ -4417,15 +4408,6 @@
         }
       }
     },
-    "saslprep": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/saslprep/-/saslprep-1.0.3.tgz",
-      "integrity": "sha512-/MY/PEMbk2SuY5sScONwhUDsV2p77Znkb/q3nSVstq/yQzYJOH/Azh29p9oJLsl3LnQwSvZDKagDGBsBwSooag==",
-      "optional": true,
-      "requires": {
-        "sparse-bitfield": "3.0.3"
-      }
-    },
     "semver": {
       "version": "5.7.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
@@ -4762,15 +4744,6 @@
       "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=",
       "dev": true
     },
-    "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": "1.5.0"
-      }
-    },
     "split-string": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/split-string/-/split-string-3.1.0.tgz",
diff --git a/package.json b/package.json
index a1ed7ac..cbbfdd9 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "jsonwebtoken": "7.1.9",
     "method-override": "2.3.5",
     "methods": "1.1.2",
-    "mongoose": "5.6.11",
+    "mongoose": "5.7.5",
     "mongoose-unique-validator": "2.0.3",
     "morgan": "1.7.0",
     "passport": "0.3.2",
diff --git a/yarn.lock b/yarn.lock
index d2b6d2a..5defb5d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -172,12 +172,6 @@ async@2.5.0, async@^2.0.1:
   dependencies:
     lodash "^4.14.0"
 
-async@2.6.2:
-  version "2.6.2"
-  resolved "https://registry.yarnpkg.com/async/-/async-2.6.2.tgz#18330ea7e6e313887f5d2f2a904bac6fe4dd5381"
-  dependencies:
-    lodash "^4.17.11"
-
 async@^0.9.0:
   version "0.9.2"
   resolved "https://registry.yarnpkg.com/async/-/async-0.9.2.tgz#aea74d5e61c1f899613bf64bda66d4c78f2fd17d"
@@ -1997,10 +1991,6 @@ lodash@^3.10.1, lodash@~3.10.1:
   version "3.10.1"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
 
-lodash@^4.17.11:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -2041,10 +2031,6 @@ media-typer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
 
-memory-pager@^1.0.2:
-  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/memory-pager/-/memory-pager-1.5.0.tgz#d8751655d22d384682741c972f2c3d6dfa3e66b5"
-
 merge-descriptors@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
@@ -2169,22 +2155,13 @@ moment@2.x.x:
   version "2.18.1"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.18.1.tgz#c36193dd3ce1c2eed2adb7c802dbbc77a81b1c0f"
 
-mongodb-core@3.2.7:
-  version "3.2.7"
-  resolved "https://registry.yarnpkg.com/mongodb-core/-/mongodb-core-3.2.7.tgz#a8ef1fe764a192c979252dacbc600dc88d77e28f"
+mongodb@3.3.2:
+  version "3.3.2"
+  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-3.3.2.tgz#ff086b5f552cf07e24ce098694210f3d42d668b2"
   dependencies:
     bson "^1.1.1"
     require_optional "^1.0.1"
     safe-buffer "^5.1.2"
-  optionalDependencies:
-    saslprep "^1.0.0"
-
-mongodb@3.2.7:
-  version "3.2.7"
-  resolved "https://registry.yarnpkg.com/mongodb/-/mongodb-3.2.7.tgz#8ba149e4be708257cad0dea72aebb2bbb311a7ac"
-  dependencies:
-    mongodb-core "3.2.7"
-    safe-buffer "^5.1.2"
 
 mongoose-legacy-pluralize@1.0.2:
   version "1.0.2"
@@ -2197,18 +2174,16 @@ mongoose-unique-validator@2.0.3:
     lodash.foreach "^4.1.0"
     lodash.get "^4.0.2"
 
-mongoose@5.6.11:
-  version "5.6.11"
-  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-5.6.11.tgz#c63f557b702a02be8e20ec21d8f7776bdb9bd2d8"
+mongoose@5.7.5:
+  version "5.7.5"
+  resolved "https://registry.yarnpkg.com/mongoose/-/mongoose-5.7.5.tgz#b787b47216edf62036aa358c3ef0f1869c46cdc2"
   dependencies:
-    async "2.6.2"
     bson "~1.1.1"
     kareem "2.3.1"
-    mongodb "3.2.7"
-    mongodb-core "3.2.7"
+    mongodb "3.3.2"
     mongoose-legacy-pluralize "1.0.2"
     mpath "0.6.0"
-    mquery "3.2.1"
+    mquery "3.2.2"
     ms "2.1.2"
     regexp-clone "1.0.0"
     safe-buffer "5.1.2"
@@ -2229,9 +2204,9 @@ mpath@0.6.0:
   version "0.6.0"
   resolved "https://registry.yarnpkg.com/mpath/-/mpath-0.6.0.tgz#aa922029fca4f0f641f360e74c5c1b6a4c47078e"
 
-mquery@3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/mquery/-/mquery-3.2.1.tgz#8b059a49cdae0a8a9e804284ef64c2f58d3ac05d"
+mquery@3.2.2:
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/mquery/-/mquery-3.2.2.tgz#e1383a3951852ce23e37f619a9b350f1fb3664e7"
   dependencies:
     bluebird "3.5.1"
     debug "3.1.0"
@@ -2987,15 +2962,11 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     hash-base "^2.0.0"
     inherits "^2.0.1"
 
-safe-buffer@5.1.2:
+safe-buffer@5.1.2, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
 
-safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
-
-safe-buffer@^5.1.2:
+safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@^5.1.2:
   version "5.2.0"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.2.0.tgz#b74daec49b1148f88c64b68d49b1e815c1f2f519"
 
@@ -3007,12 +2978,6 @@ sanitize-html@1.14.1:
     regexp-quote "0.0.0"
     xtend "^4.0.0"
 
-saslprep@^1.0.0:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/saslprep/-/saslprep-1.0.3.tgz#4c02f946b56cf54297e347ba1093e7acac4cf226"
-  dependencies:
-    sparse-bitfield "^3.0.3"
-
 semver-diff@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/semver-diff/-/semver-diff-2.1.0.tgz#4bbb8437c8d37e4b0cf1a68fd726ec6d645d6d36"
@@ -3161,12 +3126,6 @@ source-map@~0.5.1, source-map@~0.5.3:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
 
-sparse-bitfield@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz#ff4ae6e68656056ba4b3e792ab3334d38273ca11"
-  dependencies:
-    memory-pager "^1.0.2"
-
 split@0.3:
   version "0.3.3"
   resolved "https://registry.yarnpkg.com/split/-/split-0.3.3.tgz#cd0eea5e63a211dfff7eb0f091c4133e2d0dd28f"