diff --git a/yarl/__init__.py b/yarl/__init__.py
index 749689df..094c22d5 100644
--- a/yarl/__init__.py
+++ b/yarl/__init__.py
@@ -8,7 +8,7 @@
     cache_info,
 )
 
-__version__ = "1.13.0"
+__version__ = "1.13.1.dev0"
 
 __all__ = (
     "URL",