diff --git a/package.json b/package.json
index 3068766..bd5196a 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": "4.2.22",
     "@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": "4.3.4",
     "chai-as-promised": "7.1.1",
     "coveralls": "3.1.0",
     "graphql": "15.1.0",
diff --git a/yarn.lock b/yarn.lock
index 761fc72..587981c 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@4.2.22":
+  version "4.2.22"
+  resolved "https://registry.yarnpkg.com/@types/chai/-/chai-4.2.22.tgz#47020d7e4cf19194d43b5202f35f75bd2ad35ce7"
+  integrity sha512-tFfcE+DSTzWAgifkjik9AySNqIyNoYwmR+uecPwwD/XRNfvOjmC/FjCxpiUGDkDVDphPfCUecSQVFw+lN3M3kQ==
 
 "@types/color-name@^1.1.1":
   version "1.1.1"
@@ -456,16 +456,16 @@ 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@4.3.4:
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/chai/-/chai-4.3.4.tgz#b55e655b31e1eac7099be4c08c21964fce2e6c49"
+  integrity sha512-yS5H68VYOCtN1cjfwumDSuzn/9c+yza4f3reKXlE5rUg7SFcCEy90gJvydNgOYtblyf4Zi6jIWRnXOgErta0KA==
   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"
+    pathval "^1.1.1"
     type-detect "^4.0.5"
 
 chalk@^2.0.0, chalk@^2.3.0, chalk@^2.4.2:
@@ -1801,10 +1801,10 @@ 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"