fix targets for webtesting
diff --git a/buildkite/pipelines/rules_webtesting-postsubmit.json b/buildkite/pipelines/rules_webtesting-postsubmit.json
index d976383..ad26e2e 100644
--- a/buildkite/pipelines/rules_webtesting-postsubmit.json
+++ b/buildkite/pipelines/rules_webtesting-postsubmit.json
@@ -1,13 +1,13 @@
 {
   "platforms": {
     "ubuntu1404": {
-      "test_targets": ["-- //... -//go/launcher/webdriver:go_default_test_chrome55-win10"]
+      "test_targets": ["--", "//...", "-//go/launcher/webdriver:go_default_test_chrome55-win10"]
     },
     "ubuntu1604": {
-      "test_targets": ["-- //... -//go/launcher/webdriver:go_default_test_chrome55-win10"]
+      "test_targets": ["--", "//...", "-//go/launcher/webdriver:go_default_test_chrome55-win10"]
     },
     "macos": {
-      "test_targets": ["-- //... -//go/launcher/webdriver:go_default_test_chrome55-win10"]
+      "test_targets": ["--", "//...", "-//go/launcher/webdriver:go_default_test_chrome55-win10"]
     }
   }
 }