diff --git a/cachecontrol/__init__.py b/cachecontrol/__init__.py
index 2d79474..df768f9 100644
--- a/cachecontrol/__init__.py
+++ b/cachecontrol/__init__.py
@@ -8,7 +8,7 @@
 """
 __author__ = "Eric Larson"
 __email__ = "eric@ionrock.org"
-__version__ = "0.13.0"
+__version__ = "0.13.1rc0"
 
 from cachecontrol.adapter import CacheControlAdapter
 from cachecontrol.controller import CacheController