diff --git a/memory/base.h b/memory/base.h
index e9eebe3..82ec72a 100644
--- a/memory/base.h
+++ b/memory/base.h
@@ -2,6 +2,8 @@
 #define HUMANUS_MEMORY_BASE_H
 
 #include "schema.h"
+#include <deque>
+#include <vector>
 
 namespace humanus {