diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index fda0a36..606dd84 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -15,6 +15,7 @@ if(${PPPLUGIN_ENABLE_CPP17_COMPATIBILITY})
 endif()
 target_include_directories(
   ${LIBRARY_TARGET}
+  PRIVATE ${LUA_INCLUDE_DIR}
   PUBLIC $<BUILD_INTERFACE:${CMAKE_SOURCE_DIR}/include>
   PUBLIC $<INSTALL_INTERFACE:include/${PROJECT_NAME}>)