diff --git a/package.json b/package.json
index e6016fd..444e9ae 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "istanbul": "0.4.5",
     "it-each": "0.3.1",
     "jsdoc": "3.5.5",
-    "mocha": "5.0.3"
+    "mocha": "5.0.4"
   },
   "dependencies": {
     "chai": "~4.1.0",
diff --git a/yarn.lock b/yarn.lock
index 718d0e7..1ca8c36 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1017,9 +1017,9 @@ mkdirp@0.5.1, mkdirp@0.5.x, mkdirp@^0.5.0, mkdirp@^0.5.1, mkdirp@~0.5.1:
   dependencies:
     minimist "0.0.8"
 
-mocha@5.0.3:
-  version "5.0.3"
-  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.0.3.tgz#0a95a6ddea9073239851a3a26ffc9c8d679c757a"
+mocha@5.0.4:
+  version "5.0.4"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.0.4.tgz#6b7aa328472da1088e69d47e75925fd3a3bb63c6"
   dependencies:
     browser-stdout "1.3.1"
     commander "2.11.0"