diff --git a/package.json b/package.json
index ff52b8d84..0f1921b92 100644
--- a/package.json
+++ b/package.json
@@ -77,8 +77,8 @@
     "installDebug": "BUILD_DEBUG=true npm install",
     "lint": "jshint lib test/tests test/utils examples lifecycleScripts",
     "mergecov": "lcov-result-merger 'test/**/*.info' 'test/coverage/merged.lcov' && ./lcov-1.10/bin/genhtml test/coverage/merged.lcov --output-directory test/coverage/report",
-    "mocha": "mocha test/runner test/tests --timeout 15000",
-    "mochaDebug": "mocha --debug-brk test/runner test/tests --timeout 15000",
+    "mocha": "mocha --expose-gc test/runner test/tests --timeout 15000",
+    "mochaDebug": "mocha --expose-gc --debug-brk test/runner test/tests --timeout 15000",
     "postinstall": "node lifecycleScripts/postinstall",
     "prepublish": "npm run babel",
     "rebuild": "node generate && npm run babel && node-gyp configure build",