diff --git a/ChangeLog b/ChangeLog
index e69de29..a9453bd 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -0,0 +1,2 @@
+ver 4.0:
+	Initial public release.
diff --git a/configure.ac b/configure.ac
index 0fba04c..92d840d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 AC_PREREQ(2.50)
 AC_INIT()
 
-AM_INIT_AUTOMAKE(bluez, 4.x)
+AM_INIT_AUTOMAKE(bluez, 4.0)
 AM_CONFIG_HEADER(config.h)
 
 AM_MAINTAINER_MODE