diff --git a/trezorlib/__init__.py b/trezorlib/__init__.py
index 311cc9d..061861c 100644
--- a/trezorlib/__init__.py
+++ b/trezorlib/__init__.py
@@ -1 +1 @@
-__version__ = '0.9.0a'
+__version__ = '0.9.0a0'