diff --git a/package-lock.json b/package-lock.json
index b8ca76e..166622a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -248,7 +248,8 @@
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-      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg="
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
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@@ -448,9 +449,9 @@
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-      "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0="
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
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@@ -524,13 +525,38 @@
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+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
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+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
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+          "requires": {
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+          }
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@@ -538,11 +564,6 @@
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@@ -591,6 +612,7 @@
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@@ -642,12 +664,9 @@
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-      "requires": {
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+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
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@@ -754,6 +773,11 @@
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+      "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
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+      "version": "2.0.5",
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@@ -1245,11 +1255,6 @@
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@@ -1442,11 +1447,6 @@
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-      "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA="
+      "integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=",
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@@ -1665,14 +1661,6 @@
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@@ -1772,7 +1742,8 @@
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@@ -1863,7 +1834,8 @@
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@@ -1907,19 +1879,6 @@
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@@ -2281,7 +2241,8 @@
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+          "dev": true,
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@@ -2365,6 +2326,7 @@
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@@ -2411,7 +2373,8 @@
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@@ -2677,7 +2640,8 @@
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+          "dev": true,
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@@ -3108,37 +3072,12 @@
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-      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A="
+      "integrity": "sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=",
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@@ -3533,9 +3473,9 @@
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-      "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE="
+      "version": "2.0.0",
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@@ -3618,7 +3558,8 @@
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@@ -3629,6 +3570,7 @@
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+      "dev": true,
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@@ -3636,12 +3578,14 @@
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+      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
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@@ -3912,6 +3856,7 @@
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@@ -3921,6 +3866,7 @@
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@@ -3931,11 +3877,6 @@
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-      "resolved": "http://registry.npmjs.org/strip-eof/-/strip-eof-1.0.0.tgz",
-      "integrity": "sha1-u0P/VZim6wXYm1n80SnJgzE2Br8="
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       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
@@ -4128,6 +4069,7 @@
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+      "dev": true,
       "requires": {
         "isexe": "^2.0.0"
       }
@@ -4144,43 +4086,36 @@
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-      "version": "2.1.0",
-      "resolved": "http://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
-      "integrity": "sha1-2Pw9KE3QV5T+hJc8rs3Rz4JP3YU=",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+      "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
       "requires": {
-        "string-width": "^1.0.1",
-        "strip-ansi": "^3.0.1"
+        "ansi-styles": "^3.2.0",
+        "string-width": "^3.0.0",
+        "strip-ansi": "^5.0.0"
       },
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         "ansi-regex": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
-        },
-        "is-fullwidth-code-point": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
-          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
-          "requires": {
-            "number-is-nan": "^1.0.0"
-          }
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.1.tgz",
+          "integrity": "sha512-ILlv4k/3f6vfQ4OoP2AGvirOktlQ98ZEL1k9FaQjxa3L1abBgbuTDAdPOpvbGncC0BTVQrl+OM8xZGK6tWXt7g=="
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         "string-width": {
-          "version": "1.0.2",
-          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
-          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
           "requires": {
-            "code-point-at": "^1.0.0",
-            "is-fullwidth-code-point": "^1.0.0",
-            "strip-ansi": "^3.0.0"
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
           }
         },
         "strip-ansi": {
-          "version": "3.0.1",
-          "resolved": "http://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
-          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
           "requires": {
-            "ansi-regex": "^2.0.0"
+            "ansi-regex": "^4.1.0"
           }
         }
       }
@@ -4200,11 +4135,6 @@
         "mkdirp": "^0.5.1"
       }
     },
-    "xregexp": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/xregexp/-/xregexp-4.0.0.tgz",
-      "integrity": "sha512-PHyM+sQouu7xspQQwELlGwwd05mXUFqwFYfqPO0cC7x4fxyHnnuetmQr6CjJiafIDoH4MogHb9dOoJzR/Y4rFg=="
-    },
     "xtend": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
@@ -4217,30 +4147,54 @@
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     },
     "yargs": {
-      "version": "12.0.2",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.2.tgz",
-      "integrity": "sha512-e7SkEx6N6SIZ5c5H22RTZae61qtn3PYUE8JYbBFlK9sYmh3DMQ6E5ygtaG/2BW0JZi4WGgTR2IV5ChqlqrDGVQ==",
+      "version": "13.3.0",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
+      "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
       "requires": {
-        "cliui": "^4.0.0",
-        "decamelize": "^2.0.0",
+        "cliui": "^5.0.0",
         "find-up": "^3.0.0",
-        "get-caller-file": "^1.0.1",
-        "os-locale": "^3.0.0",
+        "get-caller-file": "^2.0.1",
         "require-directory": "^2.1.1",
-        "require-main-filename": "^1.0.1",
+        "require-main-filename": "^2.0.0",
         "set-blocking": "^2.0.0",
-        "string-width": "^2.0.0",
+        "string-width": "^3.0.0",
         "which-module": "^2.0.0",
-        "y18n": "^3.2.1 || ^4.0.0",
-        "yargs-parser": "^10.1.0"
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.1.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.1.tgz",
+          "integrity": "sha512-ILlv4k/3f6vfQ4OoP2AGvirOktlQ98ZEL1k9FaQjxa3L1abBgbuTDAdPOpvbGncC0BTVQrl+OM8xZGK6tWXt7g=="
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
       }
     },
     "yargs-parser": {
-      "version": "10.1.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
-      "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+      "version": "13.1.2",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.2.tgz",
+      "integrity": "sha512-3lbsNRf/j+A4QuSZfDRA7HRSfWrzO0YjqTJd5kjAq37Zep1CEgaYmrH9Q3GwPiB9cHyd1Y1UwggGhJGoxipbzg==",
       "requires": {
-        "camelcase": "^4.1.0"
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
       }
     }
   }
diff --git a/package.json b/package.json
index db80323..46507e7 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,6 @@
     "debug": "^4.1.0",
     "dotenv": "^6.1.0",
     "request": "^2.88.0",
-    "yargs": "^12.0.2"
+    "yargs": "^13.3.0"
   }
 }