diff --git a/Include/AuroraEnum.hpp b/Include/AuroraEnum.hpp
index 54aaaac..fc51555 100644
--- a/Include/AuroraEnum.hpp
+++ b/Include/AuroraEnum.hpp
@@ -14,6 +14,10 @@
 
 #if defined(AUE_OUT_OF_ECOSYSTEM)
 
+#include <unordered_map>
+#include <string>
+#include <functional>
+
 #if !defined(AU_AuHashMap)
 #define AU_AuHashMap
 template<typename T, typename Z>