diff --git a/ChangeLog b/ChangeLog
index 0df3f8f23c..6432869b78 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Fri Jan  9 19:25:25 2009  Shugo Maeda  <shugo@ruby-lang.org>
+
+	* lib/net/imap.rb (disconnect): do not refer SSL::SSLSocket for
+	  environments without OpenSSL.  backported from trunk.
+	  fixed [ruby-dev:35755].
+
 Thu Jan  8 13:24:23 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* parse.y (deferred_nodes, compstmt, arg, fixup_nodes, range_op): fix
diff --git a/lib/net/imap.rb b/lib/net/imap.rb
index f8c0d3be4c..6162ffa0d0 100644
--- a/lib/net/imap.rb
+++ b/lib/net/imap.rb
@@ -284,9 +284,11 @@ module Net
 
     # Disconnects from the server.
     def disconnect
-      if SSL::SSLSocket === @sock
+      begin
+        # try to call SSL::SSLSocket#io.
         @sock.io.shutdown
-      else
+      rescue NoMethodError
+        # @sock is not an SSL::SSLSocket.
         @sock.shutdown
       end
       @receiver_thread.join
diff --git a/version.h b/version.h
index c8b529592a..9683386d50 100644
--- a/version.h
+++ b/version.h
@@ -1,15 +1,15 @@
 #define RUBY_VERSION "1.8.7"
-#define RUBY_RELEASE_DATE "2009-01-08"
+#define RUBY_RELEASE_DATE "2009-01-09"
 #define RUBY_VERSION_CODE 187
-#define RUBY_RELEASE_CODE 20090108
-#define RUBY_PATCHLEVEL 80
+#define RUBY_RELEASE_CODE 20090109
+#define RUBY_PATCHLEVEL 81
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 8
 #define RUBY_VERSION_TEENY 7
 #define RUBY_RELEASE_YEAR 2009
 #define RUBY_RELEASE_MONTH 1
-#define RUBY_RELEASE_DAY 8
+#define RUBY_RELEASE_DAY 9
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];