diff --git a/trunk/ConsoleDataMigration/documents/Readme.txt b/trunk/ConsoleDataMigration/documents/Readme.txt
index e325280..1344c71 100644
--- a/trunk/ConsoleDataMigration/documents/Readme.txt
+++ b/trunk/ConsoleDataMigration/documents/Readme.txt
@@ -1,7 +1,7 @@
 【ビルド環境】
 
 ・SDK
-Horizon 2_3 branch r38025
+Horizon trunk r43280以降
 
 ・cygwin
 ・subversion