diff --git a/cmo/_version.py b/cmo/_version.py
index e998dc8..1b5be71 100644
--- a/cmo/_version.py
+++ b/cmo/_version.py
@@ -4,5 +4,5 @@
 
 
 
-__version__ = '1.9.12'
+__version__ = '1.9.13'