diff --git a/lib/coverage.js b/lib/coverage.js
index d853dd9b..bea4ef74 100755
--- a/lib/coverage.js
+++ b/lib/coverage.js
@@ -239,7 +239,7 @@ internals.instrument = function (filename) {
         loc: true,
         comment: true,
         range: true,
-        ecmaVersion: 6
+        ecmaVersion: 8
     });
 
     // Process comments