diff --git a/package-lock.json b/package-lock.json
index feb11a9..0139a26 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -483,12 +483,6 @@
       "integrity": "sha1-iYUI2iIm84DfkEcoRWhJwVAaSw0=",
       "dev": true
     },
-    "assertion-error": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-1.1.0.tgz",
-      "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
-      "dev": true
-    },
     "astral-regex": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/astral-regex/-/astral-regex-1.0.0.tgz",
@@ -590,18 +584,10 @@
       }
     },
     "chai": {
-      "version": "4.3.4",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.3.4.tgz",
-      "integrity": "sha512-yS5H68VYOCtN1cjfwumDSuzn/9c+yza4f3reKXlE5rUg7SFcCEy90gJvydNgOYtblyf4Zi6jIWRnXOgErta0KA==",
-      "dev": true,
-      "requires": {
-        "assertion-error": "^1.1.0",
-        "check-error": "^1.0.2",
-        "deep-eql": "^3.0.1",
-        "get-func-name": "^2.0.0",
-        "pathval": "^1.1.1",
-        "type-detect": "^4.0.5"
-      }
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-6.2.0.tgz",
+      "integrity": "sha512-aUTnJc/JipRzJrNADXVvpVqi6CO0dn3nx4EVPxijri+fj3LUUDyZQOgVeW54Ob3Y1Xh9Iz8f+CgaCl8v0mn9bA==",
+      "dev": true
     },
     "chalk": {
       "version": "2.4.2",
@@ -620,12 +606,6 @@
       "integrity": "sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==",
       "dev": true
     },
-    "check-error": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/check-error/-/check-error-1.0.2.tgz",
-      "integrity": "sha1-V00xLt2Iu13YkS6Sht1sCu1KrII=",
-      "dev": true
-    },
     "clean-stack": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/clean-stack/-/clean-stack-2.2.0.tgz",
@@ -925,15 +905,6 @@
         }
       }
     },
-    "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==",
-      "dev": true,
-      "requires": {
-        "type-detect": "^4.0.0"
-      }
-    },
     "deep-extend": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
@@ -1542,12 +1513,6 @@
       "integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
       "dev": true
     },
-    "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=",
-      "dev": true
-    },
     "get-stream": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-5.1.0.tgz",
@@ -6608,12 +6573,6 @@
         "pify": "^3.0.0"
       }
     },
-    "pathval": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/pathval/-/pathval-1.1.1.tgz",
-      "integrity": "sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==",
-      "dev": true
-    },
     "picomatch": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-2.1.1.tgz",
diff --git a/package.json b/package.json
index 782c3db..649231c 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "semantic-release": "semantic-release"
   },
   "devDependencies": {
-    "chai": "4.3.4",
+    "chai": "6.2.0",
     "coffee-script": "1.12.7",
     "eslint": "6.8.0",
     "istanbul": "0.4.5",