diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99c5824..cb2c46a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,6 +30,10 @@ add_compile_options(
   -ffunction-sections
   -fno-omit-frame-pointer)
 
+if(CMAKE_SYSTEM_PROCESSOR STREQUAL x86_64)
+  add_compile_options(-mavx)
+endif()
+
 add_subdirectory(third_party)
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/")