diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9b97923..d1dec41 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,5 @@
+cmake_minimum_required(VERSION 2.8)
+
 # Build options
 set(CMAKE_CXX_COMPILER "clang++")
 set(CMAKE_CXX_FLAGS    "${CMAKE_CXX_FLAGS} -std=c++11")