diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5a6dd97..65133e6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,5 +3,6 @@
 cmake_minimum_required(VERSION 2.6)
 find_package(Rock)
 include(RockRuby)
+rock_activate_cxx11()
 rock_init(visual_detectors 0.1)
 rock_standard_layout()