diff --git a/package.json b/package.json
index 63fab7c6..09661502 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "eslint-plugin-import": "2.9.0",
     "greenkeeper-lockfile": "1.14.0",
     "mime": "2.2.0",
-    "mocha": "5.0.3",
+    "mocha": "5.0.5",
     "power-assert": "1.4.4",
     "sinon": "5.0.0",
     "typescript": "2.7.2"
diff --git a/yarn.lock b/yarn.lock
index 6e745988..37d1987d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1464,9 +1464,9 @@ 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@5.0.5:
+  version "5.0.5"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.0.5.tgz#e228e3386b9387a4710007a641f127b00be44b52"
   dependencies:
     browser-stdout "1.3.1"
     commander "2.11.0"