diff --git a/package-lock.json b/package-lock.json
index a9b8dd2..f657c60 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -327,7 +327,8 @@
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+      "integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8=",
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@@ -345,9 +346,9 @@
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-      "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo="
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
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@@ -396,13 +397,37 @@
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-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-3.2.0.tgz",
-      "integrity": "sha1-EgYBU3qRbSmUD5NNo7SNWFo5IT0=",
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+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
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+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
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@@ -631,6 +656,11 @@
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+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
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@@ -640,10 +670,19 @@
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+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
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       "integrity": "sha1-+FWobOYa3E6GIcPNoh56dhLDqNw=",
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@@ -1049,6 +1088,34 @@
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@@ -1210,9 +1278,9 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-4.1.0.tgz",
+      "integrity": "sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==",
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@@ -1265,7 +1341,8 @@
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-      "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg="
+      "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg=",
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@@ -1469,19 +1547,21 @@
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-      "integrity": "sha1-EEqOSqym09jNFXqO+L+rLXo//bY="
+      "version": "2.0.0",
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-      "integrity": "sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0="
+      "integrity": "sha1-d8mYQFJ6qOyxqLppe4BkWnqSap0=",
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       "integrity": "sha1-VAVy0096wxGfj3bDDLwbHgN6/74=",
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@@ -1499,12 +1579,9 @@
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-      "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
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-      "integrity": "sha1-EtSj3U5o4Lec6428hBc66A2RykQ=",
-      "dev": true
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@@ -1569,11 +1645,6 @@
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-      "dev": true
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+        "invert-kv": "^2.0.0"
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@@ -1726,18 +1796,6 @@
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@@ -1787,6 +1840,31 @@
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+      "resolved": "https://registry.npmjs.org/map-age-cleaner/-/map-age-cleaner-0.1.3.tgz",
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+      "requires": {
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+      "resolved": "https://registry.npmjs.org/mem/-/mem-4.3.0.tgz",
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+        "mimic-fn": "^2.0.0",
+        "p-is-promise": "^2.0.0"
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+          "resolved": "https://registry.npmjs.org/mimic-fn/-/mimic-fn-2.1.0.tgz",
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@@ -1892,6 +1970,11 @@
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+      "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
+      "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ=="
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@@ -1913,6 +1997,14 @@
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@@ -1957,6 +2049,7 @@
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@@ -2899,7 +2992,8 @@
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@@ -4021,11 +4115,13 @@
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-      "integrity": "sha1-IPnxeuKe00XoveWDsT0gCYA8FNk=",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/os-locale/-/os-locale-3.1.0.tgz",
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       "requires": {
-        "lcid": "^1.0.0"
+        "execa": "^1.0.0",
+        "lcid": "^2.0.0",
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@@ -4034,6 +4130,21 @@
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+      "resolved": "https://registry.npmjs.org/p-defer/-/p-defer-1.0.0.tgz",
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+      "integrity": "sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4="
+    },
+    "p-is-promise": {
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+      "resolved": "https://registry.npmjs.org/p-is-promise/-/p-is-promise-2.1.0.tgz",
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+    },
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@@ -4062,6 +4173,7 @@
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@@ -4699,13 +4801,28 @@
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+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
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@@ -4725,13 +4842,10 @@
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-      "integrity": "sha1-tDFbtCFKPXBY6+7okuE/ok2YsHU="
+      "version": "2.0.0",
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@@ -4991,6 +5100,26 @@
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+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "requires": {
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+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "requires": {
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+            "strip-ansi": "^3.0.0"
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@@ -5014,9 +5143,9 @@
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-      "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
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@@ -5025,33 +5154,75 @@
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-        "lodash.assign": "^4.0.3",
-        "os-locale": "^1.4.0",
-        "read-pkg-up": "^1.0.1",
+      "version": "13.1.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.1.0.tgz",
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+        "string-width": "^3.0.0",
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+        "y18n": "^4.0.0",
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+          "requires": {
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+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
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+            "path-exists": "^3.0.0"
+          }
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+        "p-limit": {
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+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.2.2.tgz",
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+        },
+        "path-exists": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-3.0.0.tgz",
+          "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU="
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-      "integrity": "sha1-hVaN488VD/SfpRgl8DqMiA3cxcQ=",
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
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       "requires": {
-        "camelcase": "^3.0.0",
-        "lodash.assign": "^4.0.6"
+        "camelcase": "^5.0.0",
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   }
diff --git a/package.json b/package.json
index 35f38cd..40769b1 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "lodash": "^4.13.1",
     "moment": "^2.13.0",
     "shelljs": "^0.7.0",
-    "yargs": "^4.7.1"
+    "yargs": "^13.1.0"
   },
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     "coveralls": "^3.0.1",