diff --git a/pkg/core/blockchain.go b/pkg/core/blockchain.go
index 6ffdba4ed..efbf57d0d 100644
--- a/pkg/core/blockchain.go
+++ b/pkg/core/blockchain.go
@@ -46,7 +46,7 @@ import (
 // Tuning parameters.
 const (
 	headerBatchCount = 2000
-	version          = "0.2.5"
+	version          = "0.2.6"
 
 	defaultInitialGAS                      = 52000000_00000000
 	defaultGCPeriod                        = 10000