diff --git a/src/messenger/pack.pl b/src/messenger/pack.pl
index 474269ea..c2b435b0 100755
--- a/src/messenger/pack.pl
+++ b/src/messenger/pack.pl
@@ -5,7 +5,7 @@
 ##################################################################
 
 $targetFolder = "deploy";
-$suffix = "163";
+$suffix = "164";
 
 ##################################################################
 # Copies tree into target folder, preprocess .phps
diff --git a/src/messenger/webim/VERSION b/src/messenger/webim/VERSION
index 40208a80..cff47a7b 100644
--- a/src/messenger/webim/VERSION
+++ b/src/messenger/webim/VERSION
@@ -1 +1 @@
-Mibew/1.6.3
\ No newline at end of file
+Mibew/1.6.4
\ No newline at end of file
diff --git a/src/messenger/webim/install/whatsnew.txt b/src/messenger/webim/install/whatsnew.txt
index 788e7679..5795065e 100644
--- a/src/messenger/webim/install/whatsnew.txt
+++ b/src/messenger/webim/install/whatsnew.txt
@@ -1,6 +1,7 @@
   1.6.4
   -----
   [!] various compatibility fixes: button image, captcha, check webimroot variable (installation)
+  [!] fix speed of history search, fix redirection to groups
 
   1.6.3
   -----
diff --git a/src/messenger/webim/libs/common.php b/src/messenger/webim/libs/common.php
index 494b556f..6bf1619c 100644
--- a/src/messenger/webim/libs/common.php
+++ b/src/messenger/webim/libs/common.php
@@ -24,7 +24,7 @@ session_start();
 require_once(dirname(__FILE__).'/converter.php');
 require_once(dirname(__FILE__).'/config.php');
 
-$version = '1.6.3';
+$version = '1.6.4';
 $jsver = "163";
 
 function myiconv($in_enc, $out_enc, $string) {