diff --git a/package.json b/package.json
index d77fc3d..a116022 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "markdown-it-sub": "^1.0.0",
     "markdown-it-sup": "^1.0.0",
     "markdown-it-testgen": "~0.1.3",
-    "mocha": "*",
+    "mocha": "^5.2.0",
     "ndoc": "^5.0.0",
     "stylus": "~0.54.2",
     "supertest": "^3.0.0",