diff --git a/package.json b/package.json
index c00620e..b6bdb57 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
   "devDependencies": {
     "assume": "~1.5.0",
     "istanbul": "~0.4.5",
-    "mocha": "~3.1.2",
+    "mocha": "~6.2.1",
     "pre-commit": "~1.2.0"
   },
   "dependencies": {