diff --git a/ChangeLog b/ChangeLog
index 730c5e173d..c9cff704c5 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,7 +10,7 @@ Mon Dec 17 15:19:32 2001  Tanaka Akira  <akr@m17n.org>
 	use long to initialize tm_year.
 	(search_time_t): renamed from `make_time_t'.
 	(make_time_t): call `timegm' and `mktime' instead of `search_time_t'
-	if availabe.
+	if available.
 	(time_to_i): use LONG2NUM instead of INT2NUM.
 	(time_localtime): check localtime failure.
 	(time_gmtime): check gmtime failure.
diff --git a/version.h b/version.h
index 1826f8efce..70e97d9dba 100644
--- a/version.h
+++ b/version.h
@@ -1,4 +1,4 @@
 #define RUBY_VERSION "1.7.2"
-#define RUBY_RELEASE_DATE "2001-12-13"
+#define RUBY_RELEASE_DATE "2001-12-17"
 #define RUBY_VERSION_CODE 172
-#define RUBY_RELEASE_CODE 20011213
+#define RUBY_RELEASE_CODE 20011217