diff --git a/fastlane/Fastfile b/fastlane/Fastfile
index d52d39f73..41a7b30ad 100644
--- a/fastlane/Fastfile
+++ b/fastlane/Fastfile
@@ -199,6 +199,7 @@ def run_package_tests(platform_id, scheme_name)
     clean: true,
     output_types: 'junit',
     fail_build: false,
+    parallel_testing: false,
     xcargs: '-testLanguage en -testRegion en_US'
   )
   trainer(