diff --git a/ChangeLog b/ChangeLog
index f3ea7fc092..cc17791732 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jul 16 12:06:08 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* tool/rbinstall.rb (ext-arch): prune directories start with '-'.
+
 Thu Jul 15 21:43:35 2010  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* numeric.c (fix_divide): must not use rb_rational_new1 for coercion
diff --git a/tool/rbinstall.rb b/tool/rbinstall.rb
index ca392e14c7..266d717fab 100755
--- a/tool/rbinstall.rb
+++ b/tool/rbinstall.rb
@@ -338,7 +338,7 @@ end
 
 install?(:ext, :arch, :'ext-arch') do
   prepare "extension objects", archlibdir
-  noinst = %w[-*] | (CONFIG["no_install_files"] || "").split
+  noinst = %w[-* -*/] | (CONFIG["no_install_files"] || "").split
   install_recursive("#{$extout}/#{CONFIG['arch']}", archlibdir, :no_install => noinst, :mode => $prog_mode, :strip => $strip)
   prepare "extension objects", sitearchlibdir
   prepare "extension objects", vendorarchlibdir
diff --git a/version.h b/version.h
index a61000ac4c..cb01e918d0 100644
--- a/version.h
+++ b/version.h
@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.3"
-#define RUBY_RELEASE_DATE "2010-07-15"
+#define RUBY_RELEASE_DATE "2010-07-16"
 #define RUBY_PATCHLEVEL -1
 #define RUBY_BRANCH_NAME "trunk"
 
@@ -8,7 +8,7 @@
 #define RUBY_VERSION_TEENY 1
 #define RUBY_RELEASE_YEAR 2010
 #define RUBY_RELEASE_MONTH 7
-#define RUBY_RELEASE_DAY 15
+#define RUBY_RELEASE_DAY 16
 
 #include "ruby/version.h"