diff --git a/CMakeLists.txt b/CMakeLists.txt
index a4815a5..5f4cb14 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -154,6 +154,7 @@ else()
 
 
 	if( APPLE )
+		set( CMAKE_OSX_DEPLOYMENT_TARGET "10.9" )
 		if( CMAKE_CXX_COMPILER_ID STREQUAL "Clang" )
 			# With standard Apple tools -stdlib=libc++ needs to be specified in order to get
 			# C++11 support using SDKs 10.7 and 10.8.