Add platform/external/threetenbp
diff --git a/default.xml b/default.xml
index a29bbe2..40e6626 100644
--- a/default.xml
+++ b/default.xml
@@ -1697,6 +1697,7 @@
   <project name="platform/external/testng" />
   <project name="platform/external/tflite-support" />
   <project name="platform/external/third-party-review" />
+  <project name="platform/external/threetenbp" />
   <project name="platform/external/timezone-boundary-builder" />
   <project name="platform/external/timezonepicker-support" />
   <project name="platform/external/tink" />