diff --git a/bisect_kit/__init__.py b/bisect_kit/__init__.py
index 85efba2..9220299 100644
--- a/bisect_kit/__init__.py
+++ b/bisect_kit/__init__.py
@@ -7,11 +7,12 @@
 
 
 BISECT_KIT_ROOT = pathlib.Path(__file__).resolve().parent.parent
+PLATFORM_ROOT = BISECT_KIT_ROOT.parent
 
 # grpc, buildbucket protobuf modules
 sys.path.append(str(BISECT_KIT_ROOT / 'third_party'))
 # plugins
-sys.path.append(str(BISECT_KIT_ROOT / 'internal'))
+sys.path.append(str(PLATFORM_ROOT / 'bisect-kit-internal'))
 
 
 try: