diff --git a/scripts/test-extensions-unit.js b/scripts/test-extensions-unit.js
index c82a013e87..82d45a2a37 100644
--- a/scripts/test-extensions-unit.js
+++ b/scripts/test-extensions-unit.js
@@ -80,6 +80,7 @@ for (const ext of argv.extensions) {
 		console.log(execSync(command, { stdio: 'inherit'}));
 	} else {
 		const env = {
+			...process.env,
 			VSCODE_CLI: 1,
 			ELECTRON_ENABLE_STACK_DUMPING: 1,
 			ELECTRON_ENABLE_LOGGING: 1