diff --git a/nutils/SI.py b/nutils/SI.py
index 863f183..cf8fbd3 100644
--- a/nutils/SI.py
+++ b/nutils/SI.py
@@ -13,7 +13,7 @@
 import operator
 import typing
 
-__version__ = '0.1'
+__version__ = '1.0'
 
 
 class Dimension(type):