diff --git a/package.json b/package.json
index 5f497abc..13286ec3 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
     "intersection-observer": "0.5.0",
     "jquery": "3.2.1",
     "jquery-ui": "1.12.1",
-    "mocha": "4.1.0",
+    "mocha": "5.0.0",
     "mousetrap": "1.6.1",
     "npm-run-all": "4.1.2",
     "nyc": "11.4.1",