diff --git a/README.md b/README.md
index d856318..4b5dca8 100644
--- a/README.md
+++ b/README.md
@@ -11,10 +11,6 @@ to access [kintone][] with its official REST API ([en][APIen], [ja][APIja]).
 
 [kintone][] is our B2B cloud service; you can create great web apps instantly with kintone!
 
-## Version
-
-0.3.0
-
 ## License
 
 This software is licensed under [the BSD 2-clause license][bsd2].
diff --git a/app.go b/app.go
index 8c90cec..0a130c8 100644
--- a/app.go
+++ b/app.go
@@ -25,7 +25,7 @@ import (
 
 const (
 	NAME            = "go-kintone"
-	VERSION         = "0.3.0"
+	VERSION         = "0.4.2"
 	DEFAULT_TIMEOUT = time.Second * 600 // Default value for App.Timeout
 )