diff --git a/package-lock.json b/package-lock.json
index 369075a..044967d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -46,9 +46,9 @@
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-      "resolved": "https://registry.npmjs.org/bson/-/bson-1.0.4.tgz",
-      "integrity": "sha1-k8ENOeqltYQVy8QFLz5T5WKwtyw="
+      "version": "1.1.6",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.6.tgz",
+      "integrity": "sha512-EvVNVeGo4tHxwi8L6bPj3y3itEvStdwvvlojVxxbyYfoaxJ6keLgrTuKdyfEAszFK+H3olzBuafE0yoh0D1gdg=="
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@@ -386,6 +386,12 @@
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       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
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+    "memory-pager": {
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+      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
+      "integrity": "sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==",
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+    },
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       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
@@ -420,20 +426,21 @@
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     "mongodb": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.0.1.tgz",
-      "integrity": "sha1-J47oAGJX7CJ5hZSmJZVGgl1t4bI=",
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.1.3.tgz",
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       "requires": {
-        "mongodb-core": "3.0.1"
+        "mongodb-core": "3.1.2"
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     "mongodb-core": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.0.1.tgz",
-      "integrity": "sha1-/23Dbulv9ZaVPYCmhA1nMbyS7+0=",
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.1.2.tgz",
+      "integrity": "sha512-R2XxGzsmhlUeOK2jKATj1TWn3q3qNcJpKrSh0rhaBSHxJmV7WZ+ikjocdY8VdJxUkKqOxM8rxMqOAEzeJ3p1ww==",
       "requires": {
-        "bson": "1.0.4",
-        "require_optional": "1.0.1"
+        "bson": "^1.1.0",
+        "require_optional": "^1.0.1",
+        "saslprep": "^1.0.0"
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@@ -519,24 +526,33 @@
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       "requires": {
-        "resolve-from": "2.0.0",
-        "semver": "5.5.0"
+        "resolve-from": "^2.0.0",
+        "semver": "^5.1.0"
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     "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=="
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     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
       "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg=="
     },
+    "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": "5.5.0",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.0.tgz",
-      "integrity": "sha512-4SJ3dm0WAwWy/NVeioZh5AntkdJoWKxHxcmyP622fOkgHa4z3R0TdBJICINyaSDE6uNwVc8gZr+ZinwZAH4xIA=="
+      "version": "5.7.2",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.2.tgz",
+      "integrity": "sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g=="
     },
     "send": {
       "version": "0.16.1",
@@ -581,6 +597,15 @@
       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.0.3.tgz",
       "integrity": "sha1-ZlZ+NwQ+608E2RvWWMDL77VbjgQ="
     },
+    "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"
+      }
+    },
     "statuses": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
diff --git a/package.json b/package.json
index 110de2d..3cb2e3f 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "express": "^4.16.2",
     "express-jwt": "^5.3.0",
     "jsonwebtoken": "^8.1.1",
-    "mongodb": "^3.0.1",
+    "mongodb": "^3.1.3",
     "redis": "^2.8.0",
     "redis-rate-limiter": "^1.1.0"
   }