diff --git a/package-lock.json b/package-lock.json
index 02f75b7..3cab441 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -449,6 +472,12 @@
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-        "require_optional": "^1.0.1",
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+        "bl": "^2.2.1",
+        "bson": "^1.1.4",
+        "denque": "^1.4.1",
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@@ -535,6 +567,14 @@
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@@ -586,6 +631,27 @@
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+        "inherits": "~2.0.3",
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@@ -595,35 +661,30 @@
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-      "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
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+    "saslprep": {
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+      "resolved": "https://registry.npmjs.org/saslprep/-/saslprep-1.0.3.tgz",
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+      "optional": true,
+      "requires": {
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+      }
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@@ -634,6 +695,15 @@
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+    "sparse-bitfield": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/sparse-bitfield/-/sparse-bitfield-3.0.3.tgz",
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+      "optional": true,
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@@ -645,6 +715,21 @@
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+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "requires": {
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+          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
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+        }
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+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
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+    },
     "workerpool": {
       "version": "6.2.1",
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diff --git a/package.json b/package.json
index 0045532..bf59658 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
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     "lodash.merge": "^4.6.2",
-    "mongodb": "^3.3.2"
+    "mongodb": "^3.7.4"
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   "devDependencies": {
     "chai": "^4.2.0",