diff --git a/src/NativeBridge/ManagedInterop.cpp b/src/NativeBridge/ManagedInterop.cpp
index 074492d8..497d5d0f 100644
--- a/src/NativeBridge/ManagedInterop.cpp
+++ b/src/NativeBridge/ManagedInterop.cpp
@@ -6,16 +6,22 @@
 #include "DataViewInterop.h"
 #include "ManagedInterop.h"
 
+inline void destroyManagerCObject(PyObject* obj) {
+	auto* b = static_cast<PythonObjectBase*>(PyCapsule_GetPointer(obj, NULL));
+	if (b) { delete b; }
+}
+
 #define SetDict2(cpptype, nptype); \
 		{\
 			PythonObject<cpptype>* col = dynamic_cast<PythonObject<cpptype>*>(column);\
 			auto shrd = col->GetData();\
 			auto* data = shrd->data();\
+			bp::handle<> h(::PyCapsule_New((void*)column, NULL, (PyCapsule_Destructor)&destroyManagerCObject));\
 			dict[_names[i]] = np::from_data(\
 				data,\
 				np::dtype::get_builtin<nptype>(),\
 				bp::make_tuple(shrd->size()),\
-				bp::make_tuple(sizeof(nptype)), bp::object());\
+				bp::make_tuple(sizeof(nptype)), bp::object(h));\
 		}
 
 #define SetDict1(type) SetDict2(type, type)
@@ -25,11 +31,12 @@
 			PythonObject<type>* col = dynamic_cast<PythonObject<type>*>(column);\
 			auto shrd = col->GetData();\
 			auto* data = shrd->data();\
+			bp::handle<> h(::PyCapsule_New((void*)column, NULL, (PyCapsule_Destructor)&destroyManagerCObject));\
 			np::ndarray npdata = np::from_data(\
 				data,\
 				np::dtype::get_builtin<type>(),\
 				bp::make_tuple(shrd->size()),\
-				bp::make_tuple(sizeof(float)), bp::object());\
+				bp::make_tuple(sizeof(float)), bp::object(h));\
 			if (keyNames == nullptr)\
 			{\
 				dict[_names[i]] = npdata;\
@@ -305,6 +312,7 @@ bp::dict EnvironmentBlock::GetData()
 				list.append(obj);
 			}
 			dict[_names[i]] = list;
+			delete column;
 		}
 		break;
 		case TS:
diff --git a/src/NativeBridge/PythonInterop.h b/src/NativeBridge/PythonInterop.h
index 7ed17a99..9654476a 100644
--- a/src/NativeBridge/PythonInterop.h
+++ b/src/NativeBridge/PythonInterop.h
@@ -62,7 +62,7 @@ template <class T>
 class PythonObject : public PythonObjectBase
 {
 protected:
-	std::shared_ptr<std::vector<T>> _pData;
+	std::vector<T>* _pData;
 
 	size_t _numRows;
 	size_t _numCols;
@@ -71,7 +71,7 @@ class PythonObject : public PythonObjectBase
 	PythonObject(const int& kind, size_t numRows = 1, size_t numCols = 1);
 	virtual ~PythonObject();
 	void SetAt(size_t nRow, size_t nCol, const T& value);
-	const std::shared_ptr<std::vector<T> >& GetData() const;
+	const std::vector<T>* GetData() const;
 };
 
 template <class T>
@@ -81,7 +81,7 @@ inline PythonObject<T>::PythonObject(const int& kind, size_t numRows, size_t num
 	_numRows = numRows;
 	_numCols = numCols;
 
-	_pData = std::make_shared<std::vector<T>>();
+	_pData = new std::vector<T>();
 	if (_numRows > 0)
 		_pData->reserve(_numRows*_numCols);
 }
@@ -89,6 +89,7 @@ inline PythonObject<T>::PythonObject(const int& kind, size_t numRows, size_t num
 template <class T>
 inline PythonObject<T>::~PythonObject()
 {
+	delete _pData;
 }
 
 template <class T>
@@ -101,7 +102,7 @@ inline void PythonObject<T>::SetAt(size_t nRow, size_t nCol, const T& value)
 }
 
 template <class T>
-inline const std::shared_ptr<std::vector<T>>& PythonObject<T>::GetData() const
+inline const std::vector<T>* PythonObject<T>::GetData() const
 {
 	return _pData;
 }
\ No newline at end of file