diff --git a/package.json b/package.json
index 1075069..5ddabd7 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/mauricedb/polly-js#readme",
   "devDependencies": {
-    "chai": "4.3.3",
+    "chai": "4.3.4",
     "chai-as-promised": "7.1.1",
     "codecov.io": "0.1.6",
     "gulp": "4.0.2",
diff --git a/yarn.lock b/yarn.lock
index 9becc63..03e00fb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -417,10 +417,10 @@ chai-as-promised@7.1.1:
   dependencies:
     check-error "^1.0.2"
 
-chai@4.3.3:
-  version "4.3.3"
-  resolved "https://registry.yarnpkg.com/chai/-/chai-4.3.3.tgz#f2b2ad9736999d07a7ff95cf1e7086c43a76f72d"
-  integrity sha512-MPSLOZwxxnA0DhLE84klnGPojWFK5KuhP7/j5dTsxpr2S3XlkqJP5WbyYl1gCTWvG2Z5N+HD4F472WsbEZL6Pw==
+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"