diff --git a/package-lock.json b/package-lock.json
index a93045e..b325ae2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,7 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
-        "chai": "^4.2.0",
+        "chai": "^4.4.1",
         "chai-spies": "^1.0.0",
         "mocha": "^6.2.2"
       }
@@ -85,16 +85,18 @@
       }
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     "node_modules/chai": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
-      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.4.1.tgz",
+      "integrity": "sha512-13sOfMv2+DWduEU+/xbun3LScLoqN17nBeTLUsmDfKdoiC1fr0n9PU4guu4AhRcOVFk/sW8LyZWHuhWtQZiF+g==",
+      "license": "MIT",
       "dependencies": {
         "assertion-error": "^1.1.0",
-        "check-error": "^1.0.2",
-        "deep-eql": "^3.0.1",
-        "get-func-name": "^2.0.0",
-        "pathval": "^1.1.0",
-        "type-detect": "^4.0.5"
+        "check-error": "^1.0.3",
+        "deep-eql": "^4.1.3",
+        "get-func-name": "^2.0.2",
+        "loupe": "^2.3.6",
+        "pathval": "^1.1.1",
+        "type-detect": "^4.0.8"
       },
       "engines": {
         "node": ">=4"
@@ -136,9 +138,13 @@
       }
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-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
-      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.3.tgz",
+      "integrity": "sha512-iKEoDYaRmd1mxM90a2OEfWhjsjPpYPuQ+lMYsoxB126+t8fw7ySEO48nmDg5COTjxDI65/Y2OWpeEHk3ZOe8zg==",
+      "license": "MIT",
+      "dependencies": {
+        "get-func-name": "^2.0.2"
+      },
       "engines": {
         "node": "*"
       }
@@ -221,14 +227,15 @@
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-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
-      "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-4.1.4.tgz",
+      "integrity": "sha512-SUwdGfqdKOwxCPeVYjwSyRpJ7Z+fhpwIAtmCUdZIWZ/YP5R9WAsyuSgpLVDi9bjWoN2LXHNss/dk3urXtdQxGg==",
+      "license": "MIT",
       "dependencies": {
         "type-detect": "^4.0.0"
       },
       "engines": {
-        "node": ">=0.12"
+        "node": ">=6"
       }
     },
     "node_modules/define-properties": {
@@ -357,9 +364,10 @@
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     },
     "node_modules/get-func-name": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
-      "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE=",
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.2.tgz",
+      "integrity": "sha512-8vXOvuE167CtIc3OyItco7N/dpRtBbYOsPsXCz7X/PMnlGjYjSGuZJgM1Y7mmew7BKf9BqvLX2tnOVy1BBUsxQ==",
+      "license": "MIT",
       "engines": {
         "node": "*"
       }
@@ -545,6 +553,15 @@
         "node": ">=4"
       }
     },
+    "node_modules/loupe": {
+      "version": "2.3.7",
+      "resolved": "https://registry.npmjs.org/loupe/-/loupe-2.3.7.tgz",
+      "integrity": "sha512-zSMINGVYkdpYSOBmLi0D1Uo7JU9nVdQKrHxC8eYlV+9YKK9WePqAlL7lSlorG/U2Fw1w0hTBmaa/jrQ3UbPHtA==",
+      "license": "MIT",
+      "dependencies": {
+        "get-func-name": "^2.0.1"
+      }
+    },
     "node_modules/minimatch": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
@@ -724,9 +741,10 @@
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-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
-      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA=",
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
+      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==",
+      "license": "MIT",
       "engines": {
         "node": "*"
       }
@@ -829,9 +847,10 @@
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     },
     "node_modules/type-detect": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
-      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz",
+      "integrity": "sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw==",
+      "license": "MIT",
       "engines": {
         "node": ">=4"
       }
@@ -1044,16 +1063,17 @@
       "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg=="
     },
     "chai": {
-      "version": "4.2.0",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
-      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.4.1.tgz",
+      "integrity": "sha512-13sOfMv2+DWduEU+/xbun3LScLoqN17nBeTLUsmDfKdoiC1fr0n9PU4guu4AhRcOVFk/sW8LyZWHuhWtQZiF+g==",
       "requires": {
         "assertion-error": "^1.1.0",
-        "check-error": "^1.0.2",
-        "deep-eql": "^3.0.1",
-        "get-func-name": "^2.0.0",
-        "pathval": "^1.1.0",
-        "type-detect": "^4.0.5"
+        "check-error": "^1.0.3",
+        "deep-eql": "^4.1.3",
+        "get-func-name": "^2.0.2",
+        "loupe": "^2.3.6",
+        "pathval": "^1.1.1",
+        "type-detect": "^4.0.8"
       }
     },
     "chai-spies": {
@@ -1083,9 +1103,12 @@
       }
     },
     "check-error": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
-      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII="
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.3.tgz",
+      "integrity": "sha512-iKEoDYaRmd1mxM90a2OEfWhjsjPpYPuQ+lMYsoxB126+t8fw7ySEO48nmDg5COTjxDI65/Y2OWpeEHk3ZOe8zg==",
+      "requires": {
+        "get-func-name": "^2.0.2"
+      }
     },
     "cliui": {
       "version": "5.0.0",
@@ -1154,9 +1177,9 @@
       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
     },
     "deep-eql": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-3.0.1.tgz",
-      "integrity": "sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==",
+      "version": "4.1.4",
+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-4.1.4.tgz",
+      "integrity": "sha512-SUwdGfqdKOwxCPeVYjwSyRpJ7Z+fhpwIAtmCUdZIWZ/YP5R9WAsyuSgpLVDi9bjWoN2LXHNss/dk3urXtdQxGg==",
       "requires": {
         "type-detect": "^4.0.0"
       }
@@ -1249,9 +1272,9 @@
       "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg=="
     },
     "get-func-name": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.0.tgz",
-      "integrity": "sha1-6td0q+5y4gQJQzoGY2YCPdaIekE="
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/get-func-name/-/get-func-name-2.0.2.tgz",
+      "integrity": "sha512-8vXOvuE167CtIc3OyItco7N/dpRtBbYOsPsXCz7X/PMnlGjYjSGuZJgM1Y7mmew7BKf9BqvLX2tnOVy1BBUsxQ=="
     },
     "glob": {
       "version": "7.1.3",
@@ -1380,6 +1403,14 @@
         "chalk": "^2.0.1"
       }
     },
+    "loupe": {
+      "version": "2.3.7",
+      "resolved": "https://registry.npmjs.org/loupe/-/loupe-2.3.7.tgz",
+      "integrity": "sha512-zSMINGVYkdpYSOBmLi0D1Uo7JU9nVdQKrHxC8eYlV+9YKK9WePqAlL7lSlorG/U2Fw1w0hTBmaa/jrQ3UbPHtA==",
+      "requires": {
+        "get-func-name": "^2.0.1"
+      }
+    },
     "minimatch": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
@@ -1515,9 +1546,9 @@
       "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18="
     },
     "pathval": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.0.tgz",
-      "integrity": "sha1-uULm1L3mUwBe9rcTYd74cn0GReA="
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
+      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ=="
     },
     "require-directory": {
       "version": "2.1.1",
@@ -1593,9 +1624,9 @@
       }
     },
     "type-detect": {
-      "version": "4.0.8",
-      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
-      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g=="
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.1.0.tgz",
+      "integrity": "sha512-Acylog8/luQ8L7il+geoSxhEkazvkslg7PSNKOX59mbB9cOveP5aq9h74Y7YU8yDpJwetzQQrfIwtf4Wp4LKcw=="
     },
     "which": {
       "version": "1.3.1",
@@ -1725,4 +1756,4 @@
       }
     }
   }
-}
\ No newline at end of file
+}
diff --git a/package.json b/package.json
index 2d51854..5f0f587 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "chai": "^4.2.0",
+    "chai": "^4.4.1",
     "chai-spies": "^1.0.0",
     "mocha": "^6.2.2"
   }