diff --git a/package.json b/package.json
index 3068766..8262d23 100644
--- a/package.json
+++ b/package.json
@@ -40,13 +40,13 @@
   },
   "devDependencies": {
     "@istanbuljs/nyc-config-typescript": "0.1.3",
-    "@types/chai": "4.2.11",
+    "@types/chai": "4.3.4",
     "@types/chai-as-promised": "7.1.3",
     "@types/graphql": "14.2.3",
     "@types/mocha": "8.0.0",
     "@types/node": "11.13.9",
     "@types/simple-mock": "0.8.1",
-    "chai": "4.2.0",
+    "chai": "4.3.7",
     "chai-as-promised": "7.1.1",
     "coveralls": "3.1.0",
     "graphql": "15.1.0",
diff --git a/yarn.lock b/yarn.lock
index 761fc72..1aa7e35 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -209,10 +209,10 @@
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.0.1.tgz#37fea779617cfec3fd2b19a0247e8bbdd5133bf6"
 
-"@types/chai@4.2.11":
-  version "4.2.11"
-  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.11.tgz#d3614d6c5f500142358e6ed24e1bf16657536c50"
-  integrity sha512-t7uW6eFafjO+qJ3BIV2gGUyZs27egcNRkUdalkud+Qa3+kg//f129iuOFivHDXQ+vnU3fDXuwgv0cqMCbcE8sw==
+"@types/chai@4.3.4":
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.3.4.tgz#e913e8175db8307d78b4e8fa690408ba6b65dee4"
+  integrity sha512-KnRanxnpfpjUTqTCXslZSEdLfXExwgNxYPdiO2WGUj8+HDjFi8R3k5RVKPeSCzLjCcshCAtVO2QBbVuAV4kTnw==
 
 "@types/color-name@^1.1.1":
   version "1.1.1"
@@ -456,16 +456,17 @@ chai-as-promised@7.1.1:
   dependencies:
     check-error "^1.0.2"
 
-chai@4.2.0:
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/chai/-/chai-4.2.0.tgz#760aa72cf20e3795e84b12877ce0e83737aa29e5"
-  integrity sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==
+chai@4.3.7:
+  version "4.3.7"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.3.7.tgz#ec63f6df01829088e8bf55fca839bcd464a8ec51"
+  integrity sha512-HLnAzZ2iupm25PlN0xFreAlBA5zaBSv3og0DdeGA4Ar6h6rJ3A0rolRUKJhSF2V10GZKDgWF/VmAEsNWjCRB+A==
   dependencies:
     assertion-error "^1.1.0"
     check-error "^1.0.2"
-    deep-eql "^3.0.1"
+    deep-eql "^4.1.2"
     get-func-name "^2.0.0"
-    pathval "^1.1.0"
+    loupe "^2.3.1"
+    pathval "^1.1.1"
     type-detect "^4.0.5"
 
 chalk@^2.0.0, chalk@^2.3.0, chalk@^2.4.2:
@@ -646,10 +647,10 @@ decamelize@^1.2.0:
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
   integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
 
-deep-eql@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-3.0.1.tgz#dfc9404400ad1c8fe023e7da1df1c147c4b444df"
-  integrity sha512-+QeIQyN5ZuO+3Uk5DYh6/1eKO0m0YmJFGNmFHGACpf1ClL1nmlV/p4gNgbl2pJGxgXb4faqo6UE+M5ACEMyVcw==
+deep-eql@^4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/deep-eql/-/deep-eql-4.1.2.tgz#270ceb902f87724077e6f6449aed81463f42fc1c"
+  integrity sha512-gT18+YW4CcW/DBNTwAmqTtkJh7f9qqScu2qFVlx7kCoeY9tlBu9cUcr7+I+Z/noG8INehS3xQgLpTtd/QUTn4w==
   dependencies:
     type-detect "^4.0.0"
 
@@ -1525,6 +1526,13 @@ log-symbols@3.0.0:
   dependencies:
     chalk "^2.4.2"
 
+loupe@^2.3.1:
+  version "2.3.6"
+  resolved "https://registry.yarnpkg.com/loupe/-/loupe-2.3.6.tgz#76e4af498103c532d1ecc9be102036a21f787b53"
+  integrity sha512-RaPMZKiMy8/JruncMU5Bt6na1eftNoo++R4Y+N2FrxkDVTrGvcyzFTsaGif4QTeKESheMGegbhw6iUAq+5A8zA==
+  dependencies:
+    get-func-name "^2.0.0"
+
 make-dir@^3.0.0, make-dir@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/make-dir/-/make-dir-3.1.0.tgz#415e967046b3a7f1d185277d84aa58203726a13f"
@@ -1801,10 +1809,10 @@ path-parse@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.5.tgz#3c1adf871ea9cd6c9431b6ea2bd74a0ff055c4c1"
 
-pathval@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.0.tgz#b942e6d4bde653005ef6b71361def8727d0645e0"
-  integrity sha1-uULm1L3mUwBe9rcTYd74cn0GReA=
+pathval@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/pathval/-/pathval-1.1.1.tgz#8534e77a77ce7ac5a2512ea21e0fdb8fcf6c3d8d"
+  integrity sha512-Dp6zGqpTdETdR63lehJYPeIOqpiNBNtc7BpWSLrOje7UaIsE5aY92r/AunQA7rsXvet3lrJ3JnZX29UPTKXyKQ==
 
 performance-now@^2.1.0:
   version "2.1.0"