diff --git a/setup.py b/setup.py
index 7340ad80..0d549da2 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='diffcalc',
-    version='2.1.dev',
+    version='2.1',
     
     description='A diffraction condition calculator for X-ray or neutron diffractometer control.',
     long_description=open('README.rst').read(),