diff --git a/test/web-test-runner.browserstack.config.js b/test/web-test-runner.browserstack.config.js
index 69796f96..e9f4ffda 100644
--- a/test/web-test-runner.browserstack.config.js
+++ b/test/web-test-runner.browserstack.config.js
@@ -7,7 +7,7 @@ const sharedBrowserstackCapabilities = {
 
   project: `openpgpjs/${process.env.GITHUB_EVENT_NAME || 'push'}${process.env.LIGHTWEIGHT ? '/lightweight' : ''}@${process.env.GITHUB_REF_NAME}`,
   name: process.env.GITHUB_WORKFLOW || 'local',
-  build: process.env.GITHUB_SHA || 'local',
+  build: process.env.GITHUB_SHA || `local@${Date.now()}`,
   'browserstack.acceptInsecureCerts': true
 };