diff --git a/package.json b/package.json
index e6016fd..bbb4960 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": "5.1.1"
   },
   "dependencies": {
     "chai": "~4.1.0",
diff --git a/yarn.lock b/yarn.lock
index 718d0e7..7ab7234 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -993,7 +993,7 @@ mime-types@^2.1.12, mime-types@~2.1.17:
   dependencies:
     mime-db "~1.33.0"
 
-"minimatch@2 || 3", minimatch@^3.0.4:
+"minimatch@2 || 3", minimatch@3.0.4, minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
   dependencies:
@@ -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@5.1.1:
+  version "5.1.1"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-5.1.1.tgz#b774c75609dac05eb48f4d9ba1d827b97fde8a7b"
   dependencies:
     browser-stdout "1.3.1"
     commander "2.11.0"
@@ -1029,6 +1029,7 @@ mocha@5.0.3:
     glob "7.1.2"
     growl "1.10.3"
     he "1.1.1"
+    minimatch "3.0.4"
     mkdirp "0.5.1"
     supports-color "4.4.0"