diff --git a/package-lock.json b/package-lock.json
index 5780e24..67e3277 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
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+  "version": "0.4.0",
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@@ -200,6 +200,12 @@
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+          "dev": true,
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@@ -1129,12 +1219,43 @@
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+      "resolved": "https://registry.npmjs.org/cache-base/-/cache-base-1.0.1.tgz",
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+    "camelcase": {
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+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.0.0.tgz",
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+        "define-property": "^0.2.5",
+        "isobject": "^3.0.0",
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+          "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
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@@ -1243,12 +1393,32 @@
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-4.1.0.tgz",
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       "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true
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+      "integrity": "sha1-S8A3PBZLwykbTTaMgpzxqApZ3KA=",
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-      "optional": true
+      "requires": {
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+        "object-visit": "^1.0.0"
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@@ -1384,6 +1567,18 @@
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@@ -1421,6 +1616,59 @@
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@@ -1826,11 +2125,41 @@
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+          "dev": true,
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^2.0.0"
+          }
+        }
+      }
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
@@ -5179,11 +6749,111 @@
         "mkdirp": "^0.5.1"
       }
     },
+    "y18n": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
+      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==",
+      "dev": true
+    },
     "yallist": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
       "dev": true
+    },
+    "yargs": {
+      "version": "12.0.5",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-12.0.5.tgz",
+      "integrity": "sha512-Lhz8TLaYnxq/2ObqHDql8dX8CJi97oHxrjUcYtzKbbykPtVW9WB+poxI+NM2UIzsMgNCZTIf0AQwsjK5yMAqZw==",
+      "dev": true,
+      "requires": {
+        "cliui": "^4.0.0",
+        "decamelize": "^1.2.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^1.0.1",
+        "os-locale": "^3.0.0",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^1.0.1",
+        "set-blocking": "^2.0.0",
+        "string-width": "^2.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^3.2.1 || ^4.0.0",
+        "yargs-parser": "^11.1.1"
+      },
+      "dependencies": {
+        "find-up": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
+          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^3.0.0"
+          }
+        },
+        "locate-path": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
+          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
+          }
+        },
+        "p-limit": {
+          "version": "2.1.0",
+          "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.1.0.tgz",
+          "integrity": "sha512-NhURkNcrVB+8hNfLuysU8enY5xn2KXphsHBaC2YmRNTZRc7RWusw6apSpdEj3jo4CMb6W9nrF6tTnsJsJeyu6g==",
+          "dev": true,
+          "requires": {
+            "p-try": "^2.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.0.0"
+          }
+        },
+        "path-exists": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-3.0.0.tgz",
+          "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=",
+          "dev": true
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "11.1.1",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-11.1.1.tgz",
+      "integrity": "sha512-C6kB/WJDiaxONLJQnF8ccx9SEeoTTLek8RVbaOIsrAUS8VrBEXfmeSnCZxygc+XC2sNMBIwOOnfcxiynjHsVSQ==",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.5.0.tgz",
+      "integrity": "sha512-HK25qidFTCVuj/D1VfNiEndpLIeJN78aqgR23nL3y4N0U/91cOAzqfHlF8n2BvoNDcZmJKin3ddNSvOxSr8flw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.11",
+        "yargs": "^12.0.5"
+      },
+      "dependencies": {
+        "lodash": {
+          "version": "4.17.11",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+          "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
+          "dev": true
+        }
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index f9d3b13..2cc6977 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "eslint": "^5.12.0",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-plugin-import": "^2.14.0",
-    "mocha": "^5.2.0",
+    "mocha": "^6.0.0",
     "nock": "^10.0.6",
     "nyc": "^13.1.0",
     "pre-commit": "^1.2.2",