diff --git a/Projectrans.py b/Projectrans.py
index 5bfb677..4267eff 100644
--- a/Projectrans.py
+++ b/Projectrans.py
@@ -6,7 +6,7 @@ from lib.Projectrans import (
     compute_sha1, _check_annotation_for_export, sha1_file,
     get_file_dependencies, find_reachable_files_from_entries,
     topological_sort_files, Phase1Generator, DeclarationGenerator,
-    Phase2Translator,
+    Phase2Translator, _parallel_translate_worker,
     save_sha1_map, Load_sha1_map, get_sha1_map_store, clear_sha1_map_store,
     Load_project_config, resolve_paths, main
 )
@@ -15,7 +15,7 @@ __all__ = [
     'compute_sha1', '_check_annotation_for_export', 'sha1_file',
     'get_file_dependencies', 'find_reachable_files_from_entries',
     'topological_sort_files', 'Phase1Generator', 'DeclarationGenerator',
-    'Phase2Translator',
+    'Phase2Translator', '_parallel_translate_worker',
     'save_sha1_map', 'Load_sha1_map', 'get_sha1_map_store', 'clear_sha1_map_store',
     'Load_project_config', 'resolve_paths', 'main'
 ]