diff --git a/poyonga/__init__.py b/poyonga/__init__.py
index af7df36..513e75f 100644
--- a/poyonga/__init__.py
+++ b/poyonga/__init__.py
@@ -2,6 +2,6 @@
 from poyonga.const import InputType, OutputType
 from poyonga.result import GroongaResult
 
-__version__ = "0.5.0"
+__version__ = "0.6.0"
 
 __all__ = ["Groonga", "GroongaResult", "InputType", "OutputType"]