diff --git a/package-lock.json b/package-lock.json
index cbf2049..ce0c51f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,6 +27,7 @@
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             "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
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+            "optional": true,
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                 "kind-of": "^3.0.2",
                 "longest": "^1.0.1",
@@ -296,7 +297,7 @@
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-                    "resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+                    "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
                     "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
                     "dev": true
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@@ -703,7 +704,8 @@
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-            "dev": true
+            "dev": true,
+            "optional": true
         },
         "is-callable": {
             "version": "1.1.4",
@@ -813,9 +815,9 @@
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-            "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
-            "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
+            "version": "3.13.1",
+            "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz",
+            "integrity": "sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==",
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@@ -878,6 +880,7 @@
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             "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
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+            "optional": true,
             "requires": {
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@@ -921,7 +924,8 @@
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             "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-            "dev": true
+            "dev": true,
+            "optional": true
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@@ -965,7 +969,7 @@
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-            "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
+            "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.10.tgz",
             "integrity": "sha1-3j+YVD2/lggr5IrRoMfNqDYwHc8=",
             "dev": true
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@@ -989,7 +993,7 @@
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-            "resolved": "http://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+            "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
             "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
             "dev": true,
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@@ -998,7 +1002,7 @@
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-                    "resolved": "http://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+                    "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
                     "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
                     "dev": true
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@@ -1180,6 +1184,7 @@
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                     "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
                     "dev": true,
+                    "optional": true,
                     "requires": {
                         "kind-of": "^3.0.2",
                         "longest": "^1.0.1",
@@ -2513,7 +2518,8 @@
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                     "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-                    "dev": true
+                    "dev": true,
+                    "optional": true
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@@ -4278,7 +4284,8 @@
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-            "dev": true
+            "dev": true,
+            "optional": true
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         "request": {
             "version": "2.88.0",