diff --git a/package-lock.json b/package-lock.json
index 64dc3c1..69c07a7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -35,6 +35,7 @@
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             "dev": true,
+            "optional": true,
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             }
@@ -797,9 +798,9 @@
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-            "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
-            "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=",
+            "version": "0.2.2",
+            "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.2.tgz",
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             "dev": true
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@@ -1083,13 +1084,15 @@
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-            "dev": true
+            "dev": true,
+            "optional": true
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         "es6-promisify": {
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             "resolved": "https://registry.npmjs.org/es6-promisify/-/es6-promisify-5.0.0.tgz",
             "integrity": "sha1-UQnWLz5W6pZ8S2NQWu8IKRyKUgM=",
             "dev": true,
+            "optional": true,
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             }
@@ -1133,7 +1136,8 @@
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             "integrity": "sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM=",
-            "dev": true
+            "dev": true,
+            "optional": true
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         "estraverse": {
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@@ -2300,6 +2304,7 @@
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             "dev": true,
+            "optional": true,
             "requires": {
                 "agent-base": "4",
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@@ -2310,6 +2315,7 @@
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                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "ms": "2.0.0"
                     }
@@ -2332,6 +2338,7 @@
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             "dev": true,
+            "optional": true,
             "requires": {
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                 "debug": "^3.1.0"
@@ -2342,6 +2349,7 @@
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                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "ms": "2.0.0"
                     }
@@ -2407,7 +2415,8 @@
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             "integrity": "sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
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@@ -3993,7 +4002,8 @@
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             "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
-            "dev": true
+            "dev": true,
+            "optional": true
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         "pretty-hrtime": {
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@@ -4541,7 +4551,8 @@
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             "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY=",
-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "snapdragon": {
             "version": "0.8.2",
@@ -4664,6 +4675,7 @@
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             "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
             "dev": true,
+            "optional": true,
             "requires": {
                 "ip": "^1.1.4",
                 "smart-buffer": "^1.0.13"
@@ -4674,6 +4686,7 @@
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             "dev": true,
+            "optional": true,
             "requires": {
                 "agent-base": "^4.1.0",
                 "socks": "^1.1.10"
@@ -5191,6 +5204,7 @@
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             "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
             "dev": true,
+            "optional": true,
             "requires": {
                 "prelude-ls": "~1.1.2"
             }