diff --git a/CMakeLists.txt b/CMakeLists.txt
index ceca21b5..ec867d05 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -131,7 +131,7 @@ else ()
     message(STATUS "use c++20")
 endif ()
 
-set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake_modules/)
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake_modules/)
 
 # jsoncpp
 find_package(Jsoncpp REQUIRED)