diff --git a/ChangeLog b/ChangeLog
index fc896c1..67ff849 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,5 @@
-04/20/2014 Oleg Moskalenko <mom040267@gmail.com>
-Version 3.3.0.0 'Threetrees':
+04/30/2014 Oleg Moskalenko <mom040267@gmail.com>
+Version 4.0.0.0 'Threetrees':
 	- multi-tenant server.
 
 04/13/2014 Oleg Moskalenko <mom040267@gmail.com>
diff --git a/rpm/build.settings.sh b/rpm/build.settings.sh
index 1e61070..098b0ed 100755
--- a/rpm/build.settings.sh
+++ b/rpm/build.settings.sh
@@ -2,7 +2,7 @@
 
 # Common settings script.
 
-TURNVERSION=3.3.0.0
+TURNVERSION=4.0.0.0
 BUILDDIR=~/rpmbuild
 ARCH=`uname -p`
 TURNSERVER_SVN_URL=http://coturn.googlecode.com/svn
diff --git a/rpm/turnserver.spec b/rpm/turnserver.spec
index b566e09..37dfbe8 100644
--- a/rpm/turnserver.spec
+++ b/rpm/turnserver.spec
@@ -1,5 +1,5 @@
 Name:		turnserver
-Version:	3.3.0.0
+Version:	4.0.0.0
 Release:	0%{dist}
 Summary:	Coturn TURN Server
 
@@ -288,8 +288,8 @@ fi
 %{_includedir}/turn/client/TurnMsgLib.h
 
 %changelog
-* Sun Feb 09 2014 Oleg Moskalenko <mom040267@gmail.com>
-  - Sync to 3.3.0.0
+* Wed Apr 30 2014 Oleg Moskalenko <mom040267@gmail.com>
+  - Sync to 4.0.0.0
 * Tue Feb 04 2014 Oleg Moskalenko <mom040267@gmail.com>
   - Sync to 3.2.2.6
 * Sat Jan 25 2014 Oleg Moskalenko <mom040267@gmail.com>
diff --git a/src/ns_turn_defs.h b/src/ns_turn_defs.h
index bbf364d..274e1f7 100644
--- a/src/ns_turn_defs.h
+++ b/src/ns_turn_defs.h
@@ -31,7 +31,7 @@
 #ifndef __IOADEFS__
 #define __IOADEFS__
 
-#define TURN_SERVER_VERSION "3.3.0.0"
+#define TURN_SERVER_VERSION "4.0.0.0"
 #define TURN_SERVER_VERSION_NAME "Threetrees"
 #define TURN_SOFTWARE "Coturn-"TURN_SERVER_VERSION" '"TURN_SERVER_VERSION_NAME"'"