diff --git a/package-lock.json b/package-lock.json
index ec183f1..8bcc3bc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -340,9 +340,9 @@
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     },
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-      "resolved": "https://registry.npmjs.org/bson/-/bson-1.0.5.tgz",
-      "integrity": "sha512-D4SCtud6mlEb48kXdTHU31DRU0bsgOJ+4St1Dcx30uYNnf/aGc+hC9gHB/z0Eth8HYYs/hr0SFdyZViht19SwA=="
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/bson/-/bson-1.1.0.tgz",
+      "integrity": "sha512-9Aeai9TacfNtWXOYarkFJRW2CWo+dRon+fuLZYJmvLV3+MiUp0bEI6IAZfXEIg7/Pl/7IWlLaDnhzTsD81etQA=="
     },
     "buffer-shims": {
       "version": "1.0.0",
@@ -2629,6 +2629,12 @@
       "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=",
       "dev": true
     },
+    "memory-pager": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/memory-pager/-/memory-pager-1.1.0.tgz",
+      "integrity": "sha512-Mf9OHV/Y7h6YWDxTzX/b4ZZ4oh9NSXblQL8dtPCOomOtZciEHxePR78+uHFLLlsk01A6jVHhHsQZZ/WcIPpnzg==",
+      "optional": true
+    },
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       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
@@ -2799,20 +2805,37 @@
       }
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-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.0.4.tgz",
-      "integrity": "sha512-90YIIs7A4ko4kCGafxxXj3foexCAlJBC0YLwwIKgSLoE7Vni2IqUMz6HSsZ3zbXOfR1KWtxfnc0RyAMAY/ViLg==",
+      "version": "3.1.8",
+      "resolved": "https://registry.npmjs.org/mongodb/-/mongodb-3.1.8.tgz",
+      "integrity": "sha512-yNKwYxQ6m00NV6+pMoWoheFTHSQVv1KkSrfOhRDYMILGWDYtUtQRqHrFqU75rmPIY8hMozVft8zdC4KYMWaM3Q==",
       "requires": {
-        "mongodb-core": "3.0.4"
+        "mongodb-core": "3.1.7",
+        "safe-buffer": "^5.1.2"
+      },
+      "dependencies": {
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+        }
       }
     },
     "mongodb-core": {
-      "version": "3.0.4",
-      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.0.4.tgz",
-      "integrity": "sha512-OTH267FjfwBdEufSnrgd+u8HuLWRuQ6p8DR0XirPl2BdlLEMh4XwjJf1RTlruILp5p2m1w8dDC8rCxibC3W8qQ==",
-      "requires": {
-        "bson": "~1.0.4",
-        "require_optional": "^1.0.1"
+      "version": "3.1.7",
+      "resolved": "https://registry.npmjs.org/mongodb-core/-/mongodb-core-3.1.7.tgz",
+      "integrity": "sha512-YffpSrLmgFNmrvkGx+yX00KyBNk64C0BalfEn6vHHkXtcMUGXw8nxrMmhq5eXPLLlYeBpD/CsgNxE2Chf0o4zQ==",
+      "requires": {
+        "bson": "^1.1.0",
+        "require_optional": "^1.0.1",
+        "safe-buffer": "^5.1.2",
+        "saslprep": "^1.0.0"
+      },
+      "dependencies": {
+        "safe-buffer": {
+          "version": "5.1.2",
+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
+          "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+        }
       }
     },
     "ms": {
@@ -3531,10 +3554,19 @@
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       "dev": true
     },
+    "saslprep": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/saslprep/-/saslprep-1.0.2.tgz",
+      "integrity": "sha512-4cDsYuAjXssUSjxHKRe4DTZC0agDwsCqcMqtJAQPzC74nJ7LfAJflAtC1Zed5hMzEQKj82d3tuzqdGNRsLJ4Gw==",
+      "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": "5.6.0",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-5.6.0.tgz",
+      "integrity": "sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg=="
     },
     "send": {
       "version": "0.14.1",
@@ -3822,6 +3854,15 @@
       "integrity": "sha1-Gsu/tZJDbRC76PeFt8xvgoFQEsM=",
       "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": "^1.0.2"
+      }
+    },
     "split-string": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/split-string/-/split-string-3.1.0.tgz",