diff --git a/enable/__init__.py b/enable/__init__.py
index 6a793fef7..16f49fb1d 100644
--- a/enable/__init__.py
+++ b/enable/__init__.py
@@ -3,8 +3,13 @@
 """ A multi-platform object drawing library.
     Part of the Enable project of the Enthought Tool Suite.
 """
+import sys
 from ._version import full_version as __version__
 
+__all__ = [
+    '__version__',
+]
+
 __requires__ = [
     'numpy',
     'traits',