diff --git a/src/datastore_access.hpp b/src/datastore_access.hpp
index 9cd6a70..7972523 100644
--- a/src/datastore_access.hpp
+++ b/src/datastore_access.hpp
@@ -8,6 +8,7 @@
 
 #pragma once
 
+#include <map>
 #include <string>
 #include "ast_values.hpp"