diff --git a/test-resources/override.js b/test-resources/override.js
index 0ee37faaad..8661e69f0e 100644
--- a/test-resources/override.js
+++ b/test-resources/override.js
@@ -1,5 +1,6 @@
 var Mocks = require('../target/mocks/mocks.js');
 var Module = require('module');
+process.env.TZ = 'Etc/UTC'
 
 const originalLoader = Module._load;