diff --git a/package.json b/package.json
index 0d7bff0..a172ac6 100644
--- a/package.json
+++ b/package.json
@@ -46,6 +46,6 @@
   "devDependencies": {
     "jshint": "2.9.5",
     "should": "13.1.2",
-    "mocha": "4.0.1"
+    "mocha": "5.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 32bbceb..1e2efe1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1064,9 +1064,9 @@ mkdirp@0.5.1, mkdirp@0.5.x, "mkdirp@>=0.5 0", 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@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.0.0.tgz#cccac988b0bc5477119cba0e43de7af6d6ad8f4e"
   dependencies:
     browser-stdout "1.3.0"
     commander "2.11.0"