diff --git a/CMakeLists.txt b/CMakeLists.txt
index acbd867..6b0ea54 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@
 
 PROJECT(SJTU-RM-CV)
 SET(CMAKE_CXX_STANDARD 11)
-SET(CMAKE_BUILD_TYPE DEBUG)
+SET(CMAKE_BUILD_TYPE RELEASE)
 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DPATH=\"\\\"${PROJECT_SOURCE_DIR}\\\"\"")
 SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -D${CMAKE_SYSTEM_NAME}")