diff --git a/setup.py b/setup.py
index 239776e..7325d13 100755
--- a/setup.py
+++ b/setup.py
@@ -63,5 +63,6 @@
     packages=["tavutil"],
     url="https://github.com/tav/tavutil",
     version="1.0.3",
-    zip_safe=True
+    zip_safe=True,
+    use_2to3 = True
     )