diff --git a/package-lock.json b/package-lock.json
index 99ddb0f..fd782e1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1895,7 +1895,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -2104,12 +2105,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -2128,6 +2131,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -2314,7 +2318,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -2370,6 +2375,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -2413,12 +2419,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -2669,9 +2677,9 @@
       "dev": true
     },
     "i": {
-      "version": "0.3.6",
-      "resolved": "https://registry.npmjs.org/i/-/i-0.3.6.tgz",
-      "integrity": "sha1-2WyScyB28HJxG2sQ/X1PZa2O4j0=",
+      "version": "0.3.7",
+      "resolved": "https://registry.npmjs.org/i/-/i-0.3.7.tgz",
+      "integrity": "sha512-FYz4wlXgkQwIPqhzC5TdNMLSE5+GS1IIDJZY/1ZiEPCT2S3COUVZeT5OW4BmW4r5LHLQuOosSwsvnroG9GR59Q==",
       "dev": true
     },
     "iconv-lite": {