diff --git a/INSTALL b/INSTALL
index ff5c6195..db210ced 100644
--- a/INSTALL
+++ b/INSTALL
@@ -11,7 +11,7 @@ Linux:
 - libgsasl version >= 1.4 --> http://www.gnu.org/software/gsasl/
 - libboost_thread, libboost_filesystem, libboost_datetime, libboost_program_options,
   libboost_iostreams, libboost_asio, libboost_regex, libboost_random, libboost_uuid
-  (version >= 1.44, latest always recommended)  --> http://www.boost.org/
+  (version >= 1.49, latest always recommended)  --> http://www.boost.org/
 - libSDL_mixer, libSDL  --> http://www.libsdl.org/
 - libSQLite3 --> http://sqlite.org/
 - libtinyxml > 2.0 --> http://www.sourceforge.net/projects/tinyxml
diff --git a/src/net/clientthread.h b/src/net/clientthread.h
index 03f5fd96..55ec12a9 100644
--- a/src/net/clientthread.h
+++ b/src/net/clientthread.h
@@ -35,6 +35,7 @@
 
 #include <boost/shared_ptr.hpp>
 #include <boost/asio.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include <string>
 #include <algorithm>
@@ -218,7 +219,7 @@ protected:
 
 	ClientState &GetState();
 	void SetState(ClientState &newState);
-	boost::asio::deadline_timer &GetStateTimer();
+	boost::asio::steady_timer &GetStateTimer();
 
 	SenderHelper &GetSender();
 
@@ -341,8 +342,8 @@ private:
 	mutable boost::mutex m_pingDataMutex;
 	PingData m_pingData;
 
-	boost::asio::deadline_timer m_stateTimer;
-	boost::asio::deadline_timer m_avatarTimer;
+	boost::asio::steady_timer m_stateTimer;
+	boost::asio::steady_timer m_avatarTimer;
 
 	friend class AbstractClientStateReceiving;
 	friend class ClientStateInit;
diff --git a/src/net/common/clientstate.cpp b/src/net/common/clientstate.cpp
index 84921ced..2f0de9cd 100644
--- a/src/net/common/clientstate.cpp
+++ b/src/net/common/clientstate.cpp
@@ -60,6 +60,12 @@
 using namespace std;
 using namespace boost::filesystem;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 #define CLIENT_WAIT_TIMEOUT_MSEC	50
 #define CLIENT_CONNECT_TIMEOUT_SEC	10
 
@@ -238,7 +244,7 @@ void
 ClientStateDownloadingServerList::Enter(boost::shared_ptr<ClientThread> client)
 {
 	client->GetStateTimer().expires_from_now(
-		boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+		milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 	client->GetStateTimer().async_wait(
 		boost::bind(
 			&ClientStateDownloadingServerList::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -265,7 +271,7 @@ ClientStateDownloadingServerList::TimerLoop(const boost::system::error_code& ec,
 			client->SetState(ClientStateReadingServerList::Instance());
 		} else {
 			client->GetStateTimer().expires_from_now(
-				boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+				milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 			client->GetStateTimer().async_wait(
 				boost::bind(
 					&ClientStateDownloadingServerList::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -409,7 +415,7 @@ void
 ClientStateWaitChooseServer::Enter(boost::shared_ptr<ClientThread> client)
 {
 	client->GetStateTimer().expires_from_now(
-		boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+		milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 	client->GetStateTimer().async_wait(
 		boost::bind(
 			&ClientStateWaitChooseServer::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -432,7 +438,7 @@ ClientStateWaitChooseServer::TimerLoop(const boost::system::error_code& ec, boos
 			client->SetState(ClientStateStartResolve::Instance());
 		} else {
 			client->GetStateTimer().expires_from_now(
-				boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+				milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 			client->GetStateTimer().async_wait(
 				boost::bind(
 					&ClientStateWaitChooseServer::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -461,7 +467,7 @@ void
 ClientStateStartConnect::Enter(boost::shared_ptr<ClientThread> client)
 {
 	client->GetStateTimer().expires_from_now(
-		boost::posix_time::seconds(CLIENT_CONNECT_TIMEOUT_SEC));
+		seconds(CLIENT_CONNECT_TIMEOUT_SEC));
 	client->GetStateTimer().async_wait(
 		boost::bind(
 			&ClientStateStartConnect::TimerTimeout, this, boost::asio::placeholders::error, client));
@@ -986,7 +992,7 @@ void
 ClientStateWaitEnterLogin::Enter(boost::shared_ptr<ClientThread> client)
 {
 	client->GetStateTimer().expires_from_now(
-		boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+		milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 	client->GetStateTimer().async_wait(
 		boost::bind(
 			&ClientStateWaitEnterLogin::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -1065,7 +1071,7 @@ ClientStateWaitEnterLogin::TimerLoop(const boost::system::error_code& ec, boost:
 			}
 		} else {
 			client->GetStateTimer().expires_from_now(
-				boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+				milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 			client->GetStateTimer().async_wait(
 				boost::bind(
 					&ClientStateWaitEnterLogin::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -1399,7 +1405,7 @@ void
 ClientStateSynchronizeStart::Enter(boost::shared_ptr<ClientThread> client)
 {
 	client->GetStateTimer().expires_from_now(
-		boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+		milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 	client->GetStateTimer().async_wait(
 		boost::bind(
 			&ClientStateSynchronizeStart::TimerLoop, this, boost::asio::placeholders::error, client));
@@ -1429,7 +1435,7 @@ ClientStateSynchronizeStart::TimerLoop(const boost::system::error_code& ec, boos
 			client->SetState(ClientStateWaitStart::Instance());
 		} else {
 			client->GetStateTimer().expires_from_now(
-				boost::posix_time::milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
+				milliseconds(CLIENT_WAIT_TIMEOUT_MSEC));
 			client->GetStateTimer().async_wait(
 				boost::bind(
 					&ClientStateSynchronizeStart::TimerLoop, this, boost::asio::placeholders::error, client));
diff --git a/src/net/common/clientthread.cpp b/src/net/common/clientthread.cpp
index c36e94af..2a338483 100644
--- a/src/net/common/clientthread.cpp
+++ b/src/net/common/clientthread.cpp
@@ -66,6 +66,12 @@ using namespace std;
 using namespace boost::filesystem;
 using boost::asio::ip::tcp;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 ClientThread::ClientThread(GuiInterface &gui, AvatarManager &avatarManager, Log *myLog)
 	: m_ioService(new boost::asio::io_service), m_clientLog(myLog), m_curState(NULL), m_gui(gui),
 	  m_avatarManager(avatarManager), m_isServerSelected(false),
@@ -586,7 +592,7 @@ void
 ClientThread::RegisterTimers()
 {
 	m_avatarTimer.expires_from_now(
-		boost::posix_time::milliseconds(CLIENT_AVATAR_LOOP_MSEC));
+		milliseconds(CLIENT_AVATAR_LOOP_MSEC));
 	m_avatarTimer.async_wait(
 		boost::bind(
 			&ClientThread::TimerCheckAvatarDownloads, shared_from_this(), boost::asio::placeholders::error));
@@ -910,7 +916,7 @@ ClientThread::TimerCheckAvatarDownloads(const boost::system::error_code& ec)
 			PassAvatarFileToManager(playerId, tmpAvatar);
 		}
 		m_avatarTimer.expires_from_now(
-			boost::posix_time::milliseconds(CLIENT_AVATAR_LOOP_MSEC));
+			milliseconds(CLIENT_AVATAR_LOOP_MSEC));
 		m_avatarTimer.async_wait(
 			boost::bind(
 				&ClientThread::TimerCheckAvatarDownloads, shared_from_this(), boost::asio::placeholders::error));
@@ -1022,7 +1028,7 @@ ClientThread::SetState(ClientState &newState)
 	m_curState->Enter(shared_from_this());
 }
 
-boost::asio::deadline_timer &
+boost::asio::steady_timer &
 ClientThread::GetStateTimer()
 {
 	return m_stateTimer;
diff --git a/src/net/common/serveradminbot.cpp b/src/net/common/serveradminbot.cpp
index a200cc97..36c3a1dc 100644
--- a/src/net/common/serveradminbot.cpp
+++ b/src/net/common/serveradminbot.cpp
@@ -49,6 +49,12 @@
 using namespace std;
 using namespace boost::filesystem;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 ServerAdminBot::ServerAdminBot(boost::shared_ptr<boost::asio::io_service> ioService)
 	: m_notifyTimeoutMinutes(0), m_notifyIntervalMinutes(0), m_notifyCounter(0),
 	  m_notifyTimer(boost::posix_time::time_duration(0, 0, 0), boost::timers::portable::second_timer::manual_start),
@@ -272,17 +278,17 @@ ServerAdminBot::Run()
 	if (m_ircAdminThread) {
 		// Initialise the timers.
 		m_reconnectTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
 		m_reconnectTimer.async_wait(
 			boost::bind(
 				&ServerAdminBot::ReconnectHandler, shared_from_this(), boost::asio::placeholders::error));
 		m_notifyLoopTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_NOTIFY_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_NOTIFY_IRC_BOT_INTERVAL_SEC));
 		m_notifyLoopTimer.async_wait(
 			boost::bind(
 				&ServerAdminBot::NotifyLoop, shared_from_this(), boost::asio::placeholders::error));
 		m_checkFileTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_CHECK_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_CHECK_IRC_BOT_INTERVAL_SEC));
 		m_checkFileTimer.async_wait(
 			boost::bind(
 				&ServerAdminBot::CheckFileHandler, shared_from_this(), boost::asio::placeholders::error));
@@ -298,7 +304,7 @@ ServerAdminBot::ReconnectHandler(const boost::system::error_code& ec)
 		Reconnect();
 
 		m_reconnectTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
 		m_reconnectTimer.async_wait(
 			boost::bind(
 				&ServerAdminBot::ReconnectHandler, shared_from_this(), boost::asio::placeholders::error));
@@ -330,7 +336,7 @@ ServerAdminBot::CheckFileHandler(const boost::system::error_code& ec)
 			Reconnect();
 		}
 		m_checkFileTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_CHECK_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_CHECK_IRC_BOT_INTERVAL_SEC));
 		m_checkFileTimer.async_wait(
 			boost::bind(
 				&ServerAdminBot::CheckFileHandler, shared_from_this(), boost::asio::placeholders::error));
@@ -386,7 +392,7 @@ ServerAdminBot::NotifyLoop(const boost::system::error_code& ec)
 			}
 		}
 		m_notifyLoopTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_NOTIFY_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_NOTIFY_IRC_BOT_INTERVAL_SEC));
 		m_notifyLoopTimer.async_wait(
 			boost::bind(
 				&ServerAdminBot::NotifyLoop, shared_from_this(), boost::asio::placeholders::error));
diff --git a/src/net/common/serverbanmanager.cpp b/src/net/common/serverbanmanager.cpp
index 99951f21..62a94997 100644
--- a/src/net/common/serverbanmanager.cpp
+++ b/src/net/common/serverbanmanager.cpp
@@ -34,6 +34,11 @@
 
 using namespace std;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
 
 ServerBanManager::ServerBanManager(boost::shared_ptr<boost::asio::io_service> ioService)
 	: m_ioService(ioService), m_curBanId(0)
@@ -126,7 +131,7 @@ ServerBanManager::GetBanList(list<string> &list) const
 			banText << (*i_nick).first << ": (nickStr) - " << (*i_nick).second.nameStr;
 
 		if ((*i_nick).second.timer)
-			banText << " duration: " << (*i_nick).second.timer->expires_from_now().hours() << "h";
+			banText << " duration: " << duration_cast<hours>((*i_nick).second.timer->expires_from_now()).count() << "h";
 		list.push_back(banText.str());
 		++i_nick;
 	}
@@ -136,7 +141,7 @@ ServerBanManager::GetBanList(list<string> &list) const
 		ostringstream banText;
 		banText << (*i_ip).first << ": (IP) - " << (*i_ip).second.ipAddress;
 		if ((*i_ip).second.timer)
-			banText << " duration: " << (*i_ip).second.timer->expires_from_now().hours() << "h";
+			banText << " duration: " << duration_cast<hours>((*i_ip).second.timer->expires_from_now()).count() << "h";
 		list.push_back(banText.str());
 		++i_ip;
 	}
@@ -235,14 +240,14 @@ ServerBanManager::IsBadGameName(const std::string &name) const
 	return retVal;
 }
 
-boost::shared_ptr<boost::asio::deadline_timer>
+boost::shared_ptr<boost::asio::steady_timer>
 ServerBanManager::InternalRegisterTimedBan(unsigned timerId, unsigned durationHours)
 {
-	boost::shared_ptr<boost::asio::deadline_timer> tmpTimer;
+	boost::shared_ptr<boost::asio::steady_timer> tmpTimer;
 	if (durationHours) {
-		tmpTimer.reset(new boost::asio::deadline_timer(*m_ioService));
+		tmpTimer.reset(new boost::asio::steady_timer(*m_ioService));
 		tmpTimer->expires_from_now(
-			boost::posix_time::hours(durationHours));
+			hours(durationHours));
 		tmpTimer->async_wait(
 			boost::bind(
 				&ServerBanManager::TimerRemoveBan, shared_from_this(), boost::asio::placeholders::error, timerId, tmpTimer));
@@ -251,7 +256,7 @@ ServerBanManager::InternalRegisterTimedBan(unsigned timerId, unsigned durationHo
 }
 
 void
-ServerBanManager::TimerRemoveBan(const boost::system::error_code &ec, unsigned banId, boost::shared_ptr<boost::asio::deadline_timer> timer)
+ServerBanManager::TimerRemoveBan(const boost::system::error_code &ec, unsigned banId, boost::shared_ptr<boost::asio::steady_timer> timer)
 {
 	if (!ec && timer)
 		UnBan(banId);
diff --git a/src/net/common/servergame.cpp b/src/net/common/servergame.cpp
index bf7102b0..4deb7940 100644
--- a/src/net/common/servergame.cpp
+++ b/src/net/common/servergame.cpp
@@ -53,6 +53,12 @@
 
 using namespace std;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 static bool LessThanPlayerHandStartMoney(const boost::shared_ptr<PlayerInterface> p1, const boost::shared_ptr<PlayerInterface> p2)
 {
 	return p1->getMyRoundStartCash() < p2->getMyRoundStartCash();
@@ -276,7 +282,7 @@ ServerGame::TimerVoteKick(const boost::system::error_code &ec)
 				m_voteKickData.reset();
 			}
 			m_voteKickTimer.expires_from_now(
-				boost::posix_time::milliseconds(SERVER_CHECK_VOTE_KICK_INTERVAL_MSEC));
+				milliseconds(SERVER_CHECK_VOTE_KICK_INTERVAL_MSEC));
 			m_voteKickTimer.async_wait(
 				boost::bind(
 					&ServerGame::TimerVoteKick, shared_from_this(), boost::asio::placeholders::error));
@@ -514,7 +520,7 @@ ServerGame::InternalAskVoteKick(boost::shared_ptr<SessionData> byWhom, unsigned
 					SendToAllPlayers(packet, SessionData::Game);
 
 					m_voteKickTimer.expires_from_now(
-						boost::posix_time::milliseconds(SERVER_CHECK_VOTE_KICK_INTERVAL_MSEC));
+						milliseconds(SERVER_CHECK_VOTE_KICK_INTERVAL_MSEC));
 					m_voteKickTimer.async_wait(
 						boost::bind(
 							&ServerGame::TimerVoteKick, shared_from_this(), boost::asio::placeholders::error));
@@ -1072,13 +1078,13 @@ ServerGame::SetState(ServerGameState &newState)
 	m_curState->Enter(shared_from_this());
 }
 
-boost::asio::deadline_timer &
+boost::asio::steady_timer &
 ServerGame::GetStateTimer1()
 {
 	return m_stateTimer1;
 }
 
-boost::asio::deadline_timer &
+boost::asio::steady_timer &
 ServerGame::GetStateTimer2()
 {
 	return m_stateTimer2;
diff --git a/src/net/common/servergamestate.cpp b/src/net/common/servergamestate.cpp
index 372e5165..83c91943 100644
--- a/src/net/common/servergamestate.cpp
+++ b/src/net/common/servergamestate.cpp
@@ -52,6 +52,12 @@
 
 using namespace std;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 //#define POKERTH_SERVER_TEST
 
 #ifdef POKERTH_SERVER_TEST
@@ -570,7 +576,7 @@ ServerGameStateInit::RegisterAdminTimer(boost::shared_ptr<ServerGame> server)
 	// No admin timeout in LAN or ranking games.
 	if (server->GetLobbyThread().GetServerMode() != SERVER_MODE_LAN && server->GetGameData().gameType != GAME_TYPE_RANKING) {
 		server->GetStateTimer1().expires_from_now(
-			boost::posix_time::seconds(SERVER_GAME_ADMIN_TIMEOUT_SEC - SERVER_GAME_ADMIN_WARNING_REMAINING_SEC));
+			seconds(SERVER_GAME_ADMIN_TIMEOUT_SEC - SERVER_GAME_ADMIN_WARNING_REMAINING_SEC));
 		server->GetStateTimer1().async_wait(
 			boost::bind(
 				&ServerGameStateInit::TimerAdminWarning, this, boost::asio::placeholders::error, server));
@@ -589,7 +595,7 @@ ServerGameStateInit::RegisterAutoStartTimer(boost::shared_ptr<ServerGame> server
 	// No autostart in LAN games.
 	if (server->GetLobbyThread().GetServerMode() != SERVER_MODE_LAN) {
 		server->GetStateTimer2().expires_from_now(
-			boost::posix_time::seconds(SERVER_AUTOSTART_GAME_DELAY_SEC));
+			seconds(SERVER_AUTOSTART_GAME_DELAY_SEC));
 		server->GetStateTimer2().async_wait(
 			boost::bind(
 				&ServerGameStateInit::TimerAutoStart, this, boost::asio::placeholders::error, server));
@@ -627,7 +633,7 @@ ServerGameStateInit::TimerAdminWarning(const boost::system::error_code &ec, boos
 		}
 		// Start timeout timer.
 		server->GetStateTimer1().expires_from_now(
-			boost::posix_time::seconds(SERVER_GAME_ADMIN_WARNING_REMAINING_SEC));
+			seconds(SERVER_GAME_ADMIN_WARNING_REMAINING_SEC));
 		server->GetStateTimer1().async_wait(
 			boost::bind(
 				&ServerGameStateInit::TimerAdminTimeout, this, boost::asio::placeholders::error, server));
@@ -762,7 +768,7 @@ void
 ServerGameStateStartGame::Enter(boost::shared_ptr<ServerGame> server)
 {
 	server->GetStateTimer1().expires_from_now(
-		boost::posix_time::seconds(SERVER_START_GAME_TIMEOUT_SEC));
+		seconds(SERVER_START_GAME_TIMEOUT_SEC));
 	server->GetStateTimer1().async_wait(
 		boost::bind(
 			&ServerGameStateStartGame::TimerTimeout, this, boost::asio::placeholders::error, server));
@@ -925,7 +931,7 @@ void
 ServerGameStateHand::Enter(boost::shared_ptr<ServerGame> server)
 {
 	server->GetStateTimer1().expires_from_now(
-		boost::posix_time::milliseconds(SERVER_LOOP_DELAY_MSEC));
+		milliseconds(SERVER_LOOP_DELAY_MSEC));
 	server->GetStateTimer1().async_wait(
 		boost::bind(
 			&ServerGameStateHand::TimerLoop, this, boost::asio::placeholders::error, server));
@@ -1002,7 +1008,7 @@ ServerGameStateHand::EngineLoop(boost::shared_ptr<ServerGame> server)
 			curGame.getCurrentHand()->setCardsShown(true);
 
 			server->GetStateTimer1().expires_from_now(
-				boost::posix_time::seconds(SERVER_SHOW_CARDS_DELAY_SEC));
+				seconds(SERVER_SHOW_CARDS_DELAY_SEC));
 			server->GetStateTimer1().async_wait(
 				boost::bind(
 					&ServerGameStateHand::TimerShowCards, this, boost::asio::placeholders::error, server));
@@ -1010,7 +1016,7 @@ ServerGameStateHand::EngineLoop(boost::shared_ptr<ServerGame> server)
 			SendNewRoundCards(*server, curGame, newRound);
 
 			server->GetStateTimer1().expires_from_now(
-				boost::posix_time::seconds(GetDealCardsDelaySec(*server)));
+				seconds(GetDealCardsDelaySec(*server)));
 			server->GetStateTimer1().async_wait(
 				boost::bind(
 					&ServerGameStateHand::TimerLoop, this, boost::asio::placeholders::error, server));
@@ -1038,7 +1044,7 @@ ServerGameStateHand::EngineLoop(boost::shared_ptr<ServerGame> server)
 			// If the player is computer controlled, let the engine act.
 			if (curPlayer->getMyType() == PLAYER_TYPE_COMPUTER) {
 				server->GetStateTimer1().expires_from_now(
-					boost::posix_time::seconds(SERVER_COMPUTER_ACTION_DELAY_SEC));
+					seconds(SERVER_COMPUTER_ACTION_DELAY_SEC));
 				server->GetStateTimer1().async_wait(
 					boost::bind(
 						&ServerGameStateHand::TimerComputerAction, this, boost::asio::placeholders::error, server));
@@ -1049,7 +1055,7 @@ ServerGameStateHand::EngineLoop(boost::shared_ptr<ServerGame> server)
 					PerformPlayerAction(*server, curPlayer, PLAYER_ACTION_FOLD, 0);
 
 					server->GetStateTimer1().expires_from_now(
-						boost::posix_time::milliseconds(SERVER_LOOP_DELAY_MSEC));
+						milliseconds(SERVER_LOOP_DELAY_MSEC));
 					server->GetStateTimer1().async_wait(
 						boost::bind(
 							&ServerGameStateHand::TimerLoop, this, boost::asio::placeholders::error, server));
@@ -1117,7 +1123,7 @@ ServerGameStateHand::EngineLoop(boost::shared_ptr<ServerGame> server)
 
 				// View a dialog for a new game - delayed.
 				server->GetStateTimer1().expires_from_now(
-					boost::posix_time::seconds(SERVER_DELAY_NEXT_GAME_SEC));
+					seconds(SERVER_DELAY_NEXT_GAME_SEC));
 				server->GetStateTimer1().async_wait(
 					boost::bind(
 						&ServerGameStateHand::TimerNextGame, this, boost::asio::placeholders::error, server, winnerPlayer->getMyUniqueID()));
@@ -1136,7 +1142,7 @@ ServerGameStateHand::TimerShowCards(const boost::system::error_code &ec, boost::
 		SendNewRoundCards(*server, curGame, curGame.getCurrentHand()->getCurrentRound());
 
 		server->GetStateTimer1().expires_from_now(
-			boost::posix_time::seconds(GetDealCardsDelaySec(*server)));
+			seconds(GetDealCardsDelaySec(*server)));
 		server->GetStateTimer1().async_wait(
 			boost::bind(
 				&ServerGameStateHand::TimerLoop, this, boost::asio::placeholders::error, server));
@@ -1507,7 +1513,7 @@ ServerGameStateWaitPlayerAction::Enter(boost::shared_ptr<ServerGame> server)
 		int timeoutSec = server->GetGameData().playerActionTimeoutSec + SERVER_PLAYER_TIMEOUT_ADD_DELAY_SEC;
 #endif
 
-		server->GetStateTimer1().expires_from_now(boost::posix_time::seconds(timeoutSec));
+		server->GetStateTimer1().expires_from_now(seconds(timeoutSec));
 		server->GetStateTimer1().async_wait(
 			boost::bind(
 				&ServerGameStateWaitPlayerAction::TimerTimeout, this, boost::asio::placeholders::error, server));
@@ -1641,7 +1647,7 @@ ServerGameStateWaitNextHand::Enter(boost::shared_ptr<ServerGame> server)
 #endif
 
 	server->GetStateTimer1().expires_from_now(
-		boost::posix_time::seconds(timeoutSec));
+		seconds(timeoutSec));
 
 	server->GetStateTimer1().async_wait(
 		boost::bind(
diff --git a/src/net/common/serverlobbybot.cpp b/src/net/common/serverlobbybot.cpp
index 31d3325b..c3fd6afd 100644
--- a/src/net/common/serverlobbybot.cpp
+++ b/src/net/common/serverlobbybot.cpp
@@ -45,6 +45,12 @@
 
 using namespace std;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 ServerLobbyBot::ServerLobbyBot(boost::shared_ptr<boost::asio::io_service> ioService)
 	: m_reconnectTimer(*ioService)
 {
@@ -110,7 +116,7 @@ ServerLobbyBot::Run()
 	if (m_ircLobbyThread) {
 		// Initialise the reconnect timer.
 		m_reconnectTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
 		m_reconnectTimer.async_wait(
 			boost::bind(
 				&ServerLobbyBot::Reconnect, shared_from_this(), boost::asio::placeholders::error));
@@ -132,7 +138,7 @@ ServerLobbyBot::Reconnect(const boost::system::error_code& ec)
 			}
 		}
 		m_reconnectTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
+			seconds(SERVER_RESTART_IRC_BOT_INTERVAL_SEC));
 		m_reconnectTimer.async_wait(
 			boost::bind(
 				&ServerLobbyBot::Reconnect, shared_from_this(), boost::asio::placeholders::error));
diff --git a/src/net/common/serverlobbythread.cpp b/src/net/common/serverlobbythread.cpp
index 4e63dc5e..0c920afa 100644
--- a/src/net/common/serverlobbythread.cpp
+++ b/src/net/common/serverlobbythread.cpp
@@ -95,6 +95,11 @@
 using namespace std;
 using boost::asio::ip::tcp;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
 
 class InternalServerCallback : public SessionDataCallback, public ChatCleanerCallback, public ServerDBCallback
 {
@@ -859,19 +864,19 @@ ServerLobbyThread::RegisterTimers()
 {
 	// Remove closed games.
 	m_removeGameTimer.expires_from_now(
-		boost::posix_time::milliseconds(SERVER_REMOVE_GAME_INTERVAL_MSEC));
+		milliseconds(SERVER_REMOVE_GAME_INTERVAL_MSEC));
 	m_removeGameTimer.async_wait(
 		boost::bind(
 			&ServerLobbyThread::TimerRemoveGame, shared_from_this(), boost::asio::placeholders::error));
 	// Update the statistics file.
 	m_saveStatisticsTimer.expires_from_now(
-		boost::posix_time::seconds(SERVER_SAVE_STATISTICS_INTERVAL_SEC));
+		seconds(SERVER_SAVE_STATISTICS_INTERVAL_SEC));
 	m_saveStatisticsTimer.async_wait(
 		boost::bind(
 			&ServerLobbyThread::TimerSaveStatisticsFile, shared_from_this(), boost::asio::placeholders::error));
 	// Update the avatar upload locks.
 	m_loginLockTimer.expires_from_now(
-		boost::posix_time::milliseconds(SERVER_UPDATE_LOGIN_LOCK_INTERVAL_MSEC));
+		milliseconds(SERVER_UPDATE_LOGIN_LOCK_INTERVAL_MSEC));
 	m_loginLockTimer.async_wait(
 		boost::bind(
 			&ServerLobbyThread::TimerUpdateClientLoginLock, shared_from_this(), boost::asio::placeholders::error));
@@ -1859,7 +1864,7 @@ ServerLobbyThread::TimerRemoveGame(const boost::system::error_code &ec)
 		}
 		// Restart timer
 		m_removeGameTimer.expires_from_now(
-			boost::posix_time::milliseconds(SERVER_REMOVE_GAME_INTERVAL_MSEC));
+			milliseconds(SERVER_REMOVE_GAME_INTERVAL_MSEC));
 		m_removeGameTimer.async_wait(
 			boost::bind(
 				&ServerLobbyThread::TimerRemoveGame, shared_from_this(), boost::asio::placeholders::error));
@@ -1884,7 +1889,7 @@ ServerLobbyThread::TimerUpdateClientLoginLock(const boost::system::error_code &e
 		}
 		// Restart timer
 		m_loginLockTimer.expires_from_now(
-			boost::posix_time::milliseconds(SERVER_UPDATE_LOGIN_LOCK_INTERVAL_MSEC));
+			milliseconds(SERVER_UPDATE_LOGIN_LOCK_INTERVAL_MSEC));
 		m_loginLockTimer.async_wait(
 			boost::bind(
 				&ServerLobbyThread::TimerUpdateClientLoginLock, shared_from_this(), boost::asio::placeholders::error));
@@ -2231,7 +2236,7 @@ ServerLobbyThread::TimerSaveStatisticsFile(const boost::system::error_code &ec)
 		}
 		// Restart timer
 		m_saveStatisticsTimer.expires_from_now(
-			boost::posix_time::seconds(SERVER_SAVE_STATISTICS_INTERVAL_SEC));
+			seconds(SERVER_SAVE_STATISTICS_INTERVAL_SEC));
 		m_saveStatisticsTimer.async_wait(
 			boost::bind(
 				&ServerLobbyThread::TimerSaveStatisticsFile, shared_from_this(), boost::asio::placeholders::error));
diff --git a/src/net/common/sessiondata.cpp b/src/net/common/sessiondata.cpp
index fd30cc44..f9cd30b9 100644
--- a/src/net/common/sessiondata.cpp
+++ b/src/net/common/sessiondata.cpp
@@ -41,6 +41,12 @@
 using namespace std;
 using boost::asio::ip::tcp;
 
+#ifdef BOOST_ASIO_HAS_STD_CHRONO
+using namespace std::chrono;
+#else
+using namespace boost::chrono;
+#endif
+
 SessionData::SessionData(boost::shared_ptr<boost::asio::ip::tcp::socket> sock, SessionId id, SessionDataCallback &cb, boost::asio::io_service &ioService)
 	: m_socket(sock), m_id(id), m_state(SessionData::Init), m_readyFlag(false), m_wantsLobbyMsg(true),
 	  m_activityTimeoutSec(0), m_activityWarningRemainingSec(0), m_initTimeoutTimer(ioService), m_globalTimeoutTimer(ioService),
@@ -236,7 +242,7 @@ SessionData::TimerActivityWarning(const boost::system::error_code &ec)
 		m_callback.SessionTimeoutWarning(shared_from_this(), m_activityWarningRemainingSec);
 
 		m_activityTimeoutTimer.expires_from_now(
-			boost::posix_time::seconds(m_activityWarningRemainingSec));
+			seconds(m_activityWarningRemainingSec));
 		m_activityTimeoutTimer.async_wait(
 			boost::bind(
 				&SessionData::TimerSessionTimeout, shared_from_this(), boost::asio::placeholders::error));
@@ -322,7 +328,7 @@ SessionData::ResetActivityTimer()
 {
 	boost::mutex::scoped_lock lock(m_dataMutex);
 	m_activityTimeoutTimer.expires_from_now(
-		boost::posix_time::seconds(m_activityTimeoutSec - m_activityWarningRemainingSec));
+		seconds(m_activityTimeoutSec - m_activityWarningRemainingSec));
 	m_activityTimeoutTimer.async_wait(
 		boost::bind(
 			&SessionData::TimerActivityWarning, shared_from_this(), boost::asio::placeholders::error));
@@ -333,7 +339,7 @@ SessionData::StartTimerInitTimeout(unsigned timeoutSec)
 {
 	boost::mutex::scoped_lock lock(m_dataMutex);
 	m_initTimeoutTimer.expires_from_now(
-		boost::posix_time::seconds(timeoutSec));
+		seconds(timeoutSec));
 	m_initTimeoutTimer.async_wait(
 		boost::bind(
 			&SessionData::TimerInitTimeout, shared_from_this(), boost::asio::placeholders::error));
@@ -344,7 +350,7 @@ SessionData::StartTimerGlobalTimeout(unsigned timeoutSec)
 {
 	boost::mutex::scoped_lock lock(m_dataMutex);
 	m_globalTimeoutTimer.expires_from_now(
-		boost::posix_time::seconds(timeoutSec));
+		seconds(timeoutSec));
 	m_globalTimeoutTimer.async_wait(
 		boost::bind(
 			&SessionData::TimerSessionTimeout, shared_from_this(), boost::asio::placeholders::error));
@@ -358,7 +364,7 @@ SessionData::StartTimerActivityTimeout(unsigned timeoutSec, unsigned warningRema
 	m_activityWarningRemainingSec = warningRemainingSec;
 
 	m_activityTimeoutTimer.expires_from_now(
-		boost::posix_time::seconds(timeoutSec - warningRemainingSec));
+		seconds(timeoutSec - warningRemainingSec));
 	m_activityTimeoutTimer.async_wait(
 		boost::bind(
 			&SessionData::TimerActivityWarning, shared_from_this(), boost::asio::placeholders::error));
diff --git a/src/net/serveradminbot.h b/src/net/serveradminbot.h
index dea02915..3f0f5df2 100644
--- a/src/net/serveradminbot.h
+++ b/src/net/serveradminbot.h
@@ -34,6 +34,7 @@
 #define _SERVERADMINBOT_H_
 
 #include <boost/asio.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/thread.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include <third_party/boost/timers.hpp>
@@ -96,9 +97,9 @@ private:
 	boost::shared_ptr<IrcThread> m_ircAdminThread;
 	boost::timers::portable::second_timer m_notifyTimer;
 
-	boost::asio::deadline_timer m_reconnectTimer;
-	boost::asio::deadline_timer m_notifyLoopTimer;
-	boost::asio::deadline_timer m_checkFileTimer;
+	boost::asio::steady_timer m_reconnectTimer;
+	boost::asio::steady_timer m_notifyLoopTimer;
+	boost::asio::steady_timer m_checkFileTimer;
 };
 
 #endif
diff --git a/src/net/serverbanmanager.h b/src/net/serverbanmanager.h
index 22336adb..50ca465a 100644
--- a/src/net/serverbanmanager.h
+++ b/src/net/serverbanmanager.h
@@ -35,6 +35,7 @@
 
 #include <db/dbdefs.h>
 #include <boost/asio.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/regex.hpp>
 #include <boost/thread.hpp>
 #include <boost/enable_shared_from_this.hpp>
@@ -67,12 +68,12 @@ public:
 protected:
 
 	struct TimedPlayerBan {
-		boost::shared_ptr<boost::asio::deadline_timer> timer;
+		boost::shared_ptr<boost::asio::steady_timer> timer;
 		std::string nameStr;
 		boost::regex nameRegex;
 	};
 	struct TimedIPBan {
-		boost::shared_ptr<boost::asio::deadline_timer> timer;
+		boost::shared_ptr<boost::asio::steady_timer> timer;
 		std::string ipAddress;
 	};
 
@@ -81,8 +82,8 @@ protected:
 	typedef std::list<boost::regex> RegexList;
 	typedef std::vector<DB_id> DBPlayerIdList;
 
-	boost::shared_ptr<boost::asio::deadline_timer> InternalRegisterTimedBan(unsigned timerId, unsigned durationHours);
-	void TimerRemoveBan(const boost::system::error_code &ec, unsigned banId, boost::shared_ptr<boost::asio::deadline_timer> timer);
+	boost::shared_ptr<boost::asio::steady_timer> InternalRegisterTimedBan(unsigned timerId, unsigned durationHours);
+	void TimerRemoveBan(const boost::system::error_code &ec, unsigned banId, boost::shared_ptr<boost::asio::steady_timer> timer);
 
 	boost::shared_ptr<boost::asio::io_service> m_ioService;
 
diff --git a/src/net/servergame.h b/src/net/servergame.h
index 560c54aa..146bbd59 100644
--- a/src/net/servergame.h
+++ b/src/net/servergame.h
@@ -34,6 +34,7 @@
 #define _SERVERGAME_H_
 
 #include <boost/enable_shared_from_this.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <third_party/boost/timers.hpp>
 #include <map>
 
@@ -177,8 +178,8 @@ protected:
 	ServerGameState &GetState();
 	void SetState(ServerGameState &newState);
 
-	boost::asio::deadline_timer &GetStateTimer1();
-	boost::asio::deadline_timer &GetStateTimer2();
+	boost::asio::steady_timer &GetStateTimer1();
+	boost::asio::steady_timer &GetStateTimer2();
 
 	const StartData &GetStartData() const;
 	void SetStartData(const StartData &startData);
@@ -237,9 +238,9 @@ private:
 	ConfigFile		   &m_playerConfig;
 	unsigned			m_gameNum;
 	unsigned			m_curPetitionId;
-	boost::asio::deadline_timer m_voteKickTimer;
-	boost::asio::deadline_timer m_stateTimer1;
-	boost::asio::deadline_timer m_stateTimer2;
+	boost::asio::steady_timer m_voteKickTimer;
+	boost::asio::steady_timer m_stateTimer1;
+	boost::asio::steady_timer m_stateTimer2;
 	bool				m_isNameReported;
 
 	friend class ServerLobbyThread;
diff --git a/src/net/serverlobbybot.h b/src/net/serverlobbybot.h
index 2a6b8746..8ada9ad5 100644
--- a/src/net/serverlobbybot.h
+++ b/src/net/serverlobbybot.h
@@ -34,6 +34,7 @@
 #define _SERVERLOBBYBOT_H_
 
 #include <boost/asio.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include <string>
 #include <list>
@@ -86,7 +87,7 @@ private:
 	boost::shared_ptr<ServerLobbyThread> m_lobbyThread;
 	boost::shared_ptr<IrcThread> m_ircLobbyThread;
 
-	boost::asio::deadline_timer m_reconnectTimer;
+	boost::asio::steady_timer m_reconnectTimer;
 };
 
 #endif
diff --git a/src/net/serverlobbythread.h b/src/net/serverlobbythread.h
index c26486b7..7886d398 100644
--- a/src/net/serverlobbythread.h
+++ b/src/net/serverlobbythread.h
@@ -34,6 +34,7 @@
 #define _SERVERLOBBYTHREAD_H_
 
 #include <boost/asio.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include <boost/uuid/uuid_generators.hpp>
 
@@ -268,9 +269,9 @@ private:
 	boost::shared_ptr<ChatCleanerManager> m_chatCleanerManager;
 	boost::shared_ptr<ServerDBInterface> m_database;
 
-	boost::asio::deadline_timer m_removeGameTimer;
-	boost::asio::deadline_timer m_saveStatisticsTimer;
-	boost::asio::deadline_timer m_loginLockTimer;
+	boost::asio::steady_timer m_removeGameTimer;
+	boost::asio::steady_timer m_saveStatisticsTimer;
+	boost::asio::steady_timer m_loginLockTimer;
 
 	boost::uuids::random_generator m_sessionIdGenerator;
 
diff --git a/src/net/sessiondata.h b/src/net/sessiondata.h
index 48d94d9b..d9b502ac 100644
--- a/src/net/sessiondata.h
+++ b/src/net/sessiondata.h
@@ -36,6 +36,7 @@
 typedef unsigned SessionId;
 
 #include <boost/asio.hpp>
+#include <boost/asio/steady_timer.hpp>
 #include <boost/thread.hpp>
 #include <boost/enable_shared_from_this.hpp>
 #include <string>
@@ -144,9 +145,9 @@ private:
 	bool							m_wantsLobbyMsg;
 	unsigned						m_activityTimeoutSec;
 	unsigned						m_activityWarningRemainingSec;
-	boost::asio::deadline_timer		m_initTimeoutTimer;
-	boost::asio::deadline_timer		m_globalTimeoutTimer;
-	boost::asio::deadline_timer		m_activityTimeoutTimer;
+	boost::asio::steady_timer		m_initTimeoutTimer;
+	boost::asio::steady_timer		m_globalTimeoutTimer;
+	boost::asio::steady_timer		m_activityTimeoutTimer;
 	SessionDataCallback				&m_callback;
 	Gsasl_session					*m_authSession;
 	int								m_curAuthStep;