diff --git a/package-lock.json b/package-lock.json
index 5b985b5..7978cb9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -34,14 +34,9 @@
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@@ -125,11 +120,6 @@
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+      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.5.0.tgz",
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@@ -404,22 +395,23 @@
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-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-2.2.36.tgz",
-      "integrity": "sha512-P2SBLQ8Z0PVx71ngoXwo12+FiSfbNfGOClAao03/bant5DgLNkOPAck5IaJcEk4gKlQhDEURzfR3xuBG1/B+IA==",
+      "version": "3.1.13",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.1.13.tgz",
+      "integrity": "sha512-sz2dhvBZQWf3LRNDhbd30KHVzdjZx9IKC0L+kSZ/gzYquCF5zPOgGqRz6sSCqYZtKP2ekB4nfLxhGtzGHnIKxA==",
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-        "mongodb-core": "2.1.20",
-        "readable-stream": "2.2.7"
+        "mongodb-core": "3.1.11",
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-      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-2.1.20.tgz",
-      "integrity": "sha512-IN57CX5/Q1bhDq6ShAR6gIv4koFsZP7L8WOK1S0lR0pVDQaScffSMV5jxubLsmZ7J+UdqmykKw4r9hG3XQEGgQ==",
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+      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.1.11.tgz",
+      "integrity": "sha512-rD2US2s5qk/ckbiiGFHeu+yKYDXdJ1G87F6CG3YdaZpzdOm5zpoAZd/EKbPmFO6cQZ+XVXBXBJ660sSI0gc6qg==",
       "requires": {
-        "bson": "~1.0.4",
-        "require_optional": "~1.0.0"
+        "bson": "^1.1.0",
+        "require_optional": "^1.0.1",
+        "safe-buffer": "^5.1.2",
+        "saslprep": "^1.0.0"
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@@ -458,11 +450,6 @@
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-      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
-      "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M="
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@@ -478,31 +465,10 @@
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-      "integrity": "sha1-BwV6y+JGeyIELTb5jFrVBwVOlbE=",
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-        "inherits": "~2.0.1",
-        "isarray": "~1.0.0",
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-          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
-          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
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-      "integrity": "sha1-TPNaQkf2TKPfjC7yCMxJSxyo/C4=",
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@@ -518,6 +484,15 @@
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+    "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"
+      }
+    },
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       "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
@@ -528,19 +503,20 @@
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     },
+    "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"
+      }
+    },
     "statuses": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
       "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
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-    "string_decoder": {
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-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha1-D8Z9fBQYJd6UKC3VNr7GubzoYKs=",
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       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
@@ -570,11 +546,6 @@
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-    "util-deprecate": {
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-      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
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diff --git a/package.json b/package.json
index da841e1..f8b3033 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "koa": "^2.13.0",
     "koa-bodyparser": "^3.2.0",
     "koa-router": "^7.4.0",
-    "mongodb": "^2.2.36"
+    "mongodb": "^3.1.13"
   },
   "engines": {
     "node": "7.10.0"