diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7658cc7..d569a8b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,7 @@
 cmake_minimum_required (VERSION 3.2)
 
 set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake")
+set (CMAKE_CXX_STANDARD 11)
 
 include (${CMAKE_ROOT}/Modules/ExternalProject.cmake)