diff --git a/package-lock.json b/package-lock.json
index 07345db..6f8cabb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3190,12 +3190,14 @@
         "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"
@@ -3210,17 +3212,20 @@
         "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",
@@ -3337,7 +3342,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -3349,6 +3355,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -3363,6 +3370,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -3370,12 +3378,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.1",
             "yallist": "^3.0.0"
@@ -3394,6 +3404,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -3474,7 +3485,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -3486,6 +3498,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -3607,6 +3620,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -3872,6 +3886,7 @@
       "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-2.0.0.tgz",
       "integrity": "sha1-gTg9ctsFT8zPUzbaqQLxgvbtuyg=",
       "dev": true,
+      "optional": true,
       "requires": {
         "is-glob": "^2.0.0"
       }
@@ -4711,13 +4726,12 @@
       }
     },
     "microtime": {
-      "version": "2.1.8",
-      "resolved": "https://registry.npmjs.org/microtime/-/microtime-2.1.8.tgz",
-      "integrity": "sha1-tDxMWrE+Un4XM3DQMG2eCku/QQ0=",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/microtime/-/microtime-3.0.0.tgz",
+      "integrity": "sha512-SirJr7ZL4ow2iWcb54bekS4aWyBQNVcEDBiwAz9D/sTgY59A+uE8UJU15cp5wyZmPBwg/3zf8lyCJ5NUe1nVlQ==",
       "requires": {
-        "bindings": "1.3.x",
-        "nan": "2.10.x",
-        "prebuild-install": "^2.1.0"
+        "node-addon-api": "^1.2.0",
+        "node-gyp-build": "^3.8.0"
       }
     },
     "mime-db": {
@@ -4911,6 +4925,16 @@
         "semver": "^5.4.1"
       }
     },
+    "node-addon-api": {
+      "version": "1.6.2",
+      "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-1.6.2.tgz",
+      "integrity": "sha512-479Bjw9nTE5DdBSZZWprFryHGjUaQC31y1wHo19We/k0BZlrmhqQitWoUL0cD8+scljCbIUL+E58oRDEakdGGA=="
+    },
+    "node-gyp-build": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/node-gyp-build/-/node-gyp-build-3.8.0.tgz",
+      "integrity": "sha512-bYbpIHyRqZ7sVWXxGpz8QIRug5JZc/hzZH4GbdT9HTZi6WmKCZ8GLvP8OZ9TTiIBvwPFKgtGrlWQSXDAvYdsPw=="
+    },
     "node-lmdb": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/node-lmdb/-/node-lmdb-0.6.0.tgz",
@@ -4957,6 +4981,7 @@
       "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-2.1.1.tgz",
       "integrity": "sha1-GrKLVW4Zg2Oowab35vogE3/mrtk=",
       "dev": true,
+      "optional": true,
       "requires": {
         "remove-trailing-separator": "^1.0.1"
       }
@@ -10381,13 +10406,15 @@
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/remove-trailing-separator/-/remove-trailing-separator-1.1.0.tgz",
       "integrity": "sha1-wkvOKig62tW8P1jg1IJJuSN52O8=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "repeat-element": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/repeat-element/-/repeat-element-1.1.2.tgz",
       "integrity": "sha1-7wiaF40Ug7quTZPrmLT55OEdmQo=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "repeat-string": {
       "version": "1.6.1",
diff --git a/package.json b/package.json
index 6a3a449..1e0df55 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "debug": "^3.1.0",
     "fast-csv": "^2.4.1",
     "fs-extra": "^6.0.1",
-    "microtime": "^2.1.6",
+    "microtime": "^3.0.0",
     "mkdirp-promise": "^5.0.1",
     "moment": "^2.20.1",
     "mz": "^2.7.0",