diff --git a/include/msgpack/adaptor/vector_bool_fwd.hpp b/include/msgpack/adaptor/vector_bool_fwd.hpp
index e5016c1c..8d477ed9 100644
--- a/include/msgpack/adaptor/vector_bool_fwd.hpp
+++ b/include/msgpack/adaptor/vector_bool_fwd.hpp
@@ -20,6 +20,7 @@
 
 #include "msgpack/versioning.hpp"
 #include "msgpack/object_fwd.hpp"
+#include <vector>
 
 namespace msgpack {