diff --git a/ChangeLog b/ChangeLog
index 64dfe9b717..8ed64361d2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Thu Jun 24 01:25:21 2004  Shugo Maeda  <shugo@ruby-lang.org>
+
+	* version.h: added declarations of ruby_version,
+	ruby_release_date, ruby_platform.
+
 Wed Jun 23 22:19:10 2004  Dave Thomas  <dave@pragprog.com>
 
 	* ext/socket/socket.c (sock_s_gethostbyaddr): Work around problem
diff --git a/version.h b/version.h
index 651352ef8b..739086680d 100644
--- a/version.h
+++ b/version.h
@@ -9,3 +9,7 @@
 #define RUBY_RELEASE_YEAR 2004
 #define RUBY_RELEASE_MONTH 6
 #define RUBY_RELEASE_DAY 23
+
+RUBY_EXTERN const char ruby_version[];
+RUBY_EXTERN const char ruby_release_date[];
+RUBY_EXTERN const char ruby_platform[];