diff --git a/package.json b/package.json
index 5359740..4735125 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "fast-memoize": "^2.3.0",
     "lodash.memoize": "^4.1.2",
     "memoize-one": "^3.0.1",
-    "mocha": "^5.2.0",
+    "mocha": "^6.0.1",
     "nyc": "^12.0.1",
     "proxy-polyfill": "^0.3.0",
     "sinon": "^5.0.10",