diff --git a/gem/embedding/hope.py b/gem/embedding/hope.py
index fcbb572..12b701d 100644
--- a/gem/embedding/hope.py
+++ b/gem/embedding/hope.py
@@ -25,7 +25,7 @@ def learn_embedding(self, graph=None,
         if not graph:
             raise ValueError('graph needed')
 
-        A = nx.to_numpy_matrix(graph)
+        A = nx.to_numpy_array(graph)
         m_g = np.eye(len(graph.nodes)) - self._beta * A
         m_l = self._beta * A
         S = np.dot(np.linalg.inv(m_g), m_l)