diff --git a/package.json b/package.json
index 8297ccf..dc810b5 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "aws-sdk-mock": "^1.7.0",
     "capture-console": "^1.0.1",
     "eslint-config-taskcluster": "^3.0.0",
-    "mocha": "4.0.1",
+    "mocha": "4.1.0",
     "mock-aws-s3": "^2.6.0",
     "nock": "^9.0.28",
     "taskcluster-lib-testing": "^10.0.0",
diff --git a/yarn.lock b/yarn.lock
index b7229d8..82ff254 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1310,9 +1310,9 @@ mkdirp@0.5.1, mkdirp@^0.5.0, mkdirp@^0.5.1:
   dependencies:
     minimist "0.0.8"
 
-mocha@4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-4.0.1.tgz#0aee5a95cf69a4618820f5e51fa31717117daf1b"
+mocha@4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-4.1.0.tgz#7d86cfbcf35cb829e2754c32e17355ec05338794"
   dependencies:
     browser-stdout "1.3.0"
     commander "2.11.0"