diff --git a/build.py b/build.py
index 93acd4e..465a3db 100755
--- a/build.py
+++ b/build.py
@@ -29,6 +29,7 @@ def compile_package(root_module_name: str) -> None:
 			compile_module(os.path.join(root_module_source_path, file_name), f"{root_module_name}.{os.path.splitext(file_name)[0]}")
 
 compile_package("core")
+compile_package("oar")
 compile_package("app")
 compile_package("kym")
 compile_package("runtime")