diff --git a/xmake.lua b/xmake.lua
index 5229937..ba0d1ec 100644
--- a/xmake.lua
+++ b/xmake.lua
@@ -4,6 +4,7 @@ set_languages("c++17")
 
 target("SimpleProtocolLib")
     add_includedirs("include")
+    add_headerfiles("include/sp/**.h")
     add_files("src/sp/**.cpp")
     set_kind("static")
     -- handle shared/static kind