diff --git a/VectorType.h b/VectorType.h
index e868355..a6acd0a 100644
--- a/VectorType.h
+++ b/VectorType.h
@@ -18,6 +18,9 @@
 
 #define VECTOR_TYPE_H_
 
+#include <vector>
+
+#include "Reference.h"
 #include "Type.h"
 
 namespace android {
@@ -30,6 +33,8 @@
     std::string typeName() const override;
     bool isCompatibleElementType(Type *elementType) const override;
 
+    std::vector<Reference<Type>> getStrongReferences() const override;
+
     bool canCheckEquality() const override;
 
     std::string getCppType(