diff --git a/bonobo/__init__.py b/bonobo/__init__.py
index e567e2f..159464b 100644
--- a/bonobo/__init__.py
+++ b/bonobo/__init__.py
@@ -13,3 +13,5 @@ __all__ = [
     inject,
     service,
 ]
+
+__version__ = '0.0.0'