Index: source/tools/atlas/AtlasUI/General/Observable.h
===================================================================
--- source/tools/atlas/AtlasUI/General/Observable.h
+++ source/tools/atlas/AtlasUI/General/Observable.h
@@ -39,15 +39,9 @@
 
 */
 
-#include <boost/bind.hpp>
-#include <boost/version.hpp>
-#if BOOST_VERSION >= 104000
-# include <boost/signals2.hpp>
+#include <boost/signals2.hpp>
 typedef boost::signals2::connection ObservableConnection;
 typedef boost::signals2::scoped_connection ObservableScopedConnection;
-#else
-# error Atlas requires Boost 1.40 or later
-#endif
 
 template <typename T> class Observable : public T
 {
@@ -63,7 +57,7 @@
 
 	template<typename C> ObservableConnection RegisterObserver(int order, void (C::*callback) (const T&), C* obj)
 	{
-		return m_Signal.connect(order, boost::bind(std::mem_fun(callback), obj, _1));
+		return m_Signal.connect(order, std::bind(std::mem_fn(callback), obj, std::placeholders::_1));
 	}
 
 	ObservableConnection RegisterObserver(int order, void (*callback) (const T&))
@@ -135,7 +129,7 @@
 
 	template<typename C> ObservableConnection RegisterObserver(int order, void (C::*callback) (T*), C* obj)
 	{
-		return m_Signal.connect(order, boost::bind(std::mem_fun(callback), obj, _1));
+		return m_Signal.connect(order, std::bind(std::mem_fn(callback), obj, std::placeholders::_1));
 	}
 
 	ObservableConnection RegisterObserver(int order, void (*callback) (T*))
Index: source/tools/atlas/AtlasUI/General/Observable.cpp
===================================================================
--- source/tools/atlas/AtlasUI/General/Observable.cpp
+++ source/tools/atlas/AtlasUI/General/Observable.cpp
@@ -23,8 +23,8 @@
 {
 	// Clean up any disconnected connections that might be left in here
 	m_Conns.erase(
-		remove_if(m_Conns.begin(), m_Conns.end(),
-			not1(std::mem_fun_ref(&ObservableConnection::connected))),
+	    std::remove_if(m_Conns.begin(), m_Conns.end(),
+	        std::not_fn(std::mem_fn(&ObservableConnection::connected))),
 		m_Conns.end()
 	);
 
@@ -35,5 +35,5 @@
 ObservableScopedConnections::~ObservableScopedConnections()
 {
 	// Disconnect all connections that we hold
-	for_each(m_Conns.begin(), m_Conns.end(), std::mem_fun_ref(&ObservableConnection::disconnect));
+	for_each(m_Conns.begin(), m_Conns.end(), std::mem_fn(&ObservableConnection::disconnect));
 }