diff --git a/affine/__init__.py b/affine/__init__.py
index 09ae744..0545624 100644
--- a/affine/__init__.py
+++ b/affine/__init__.py
@@ -47,7 +47,7 @@
 
 __all__ = ['Affine']
 __author__ = "Sean Gillies"
-__version__ = "2.1.0"
+__version__ = "2.2.0"
 
 EPSILON = 1e-5