diff --git a/python/test/requirements-dev.txt b/python/test/requirements-dev.txt
index 5718a0210..c28827d1a 100644
--- a/python/test/requirements-dev.txt
+++ b/python/test/requirements-dev.txt
@@ -1 +1,2 @@
 pyshader==0.7.0
+numpy
diff --git a/python/test/test_array_multiplication.py b/python/test/test_array_multiplication.py
index 3ef3c02c3..337c7a5db 100644
--- a/python/test/test_array_multiplication.py
+++ b/python/test/test_array_multiplication.py
@@ -1,5 +1,6 @@
 import pyshader as ps
 import kp
+import numpy as np
 
 
 def test_array_multiplication():
@@ -33,3 +34,4 @@ def test_array_multiplication():
     mgr.eval_tensor_sync_local_def([tensor_out])
 
     assert tensor_out.data() == [2.0, 4.0, 6.0]
+    assert np.all(tensor_out.numpy() == [2.0, 4.0, 6.0])
diff --git a/python/test/test_kompute.py b/python/test/test_kompute.py
index b9b145f21..597a9d8a3 100644
--- a/python/test/test_kompute.py
+++ b/python/test/test_kompute.py
@@ -1,6 +1,7 @@
 import os
 
 import kp
+import numpy as np
 
 DIRNAME = os.path.dirname(os.path.abspath(__file__))
 
@@ -22,6 +23,7 @@ def test_opmult():
     mgr.eval_tensor_sync_local_def([tensor_out])
 
     assert tensor_out.data() == [2.0, 4.0, 6.0]
+    assert np.all(tensor_out.numpy() == [2.0, 4.0, 6.0])
 
 def test_opalgobase_data():
     """
@@ -57,6 +59,7 @@ def test_opalgobase_data():
     mgr.eval_tensor_sync_local_def([tensor_out])
 
     assert tensor_out.data() == [2.0, 4.0, 6.0]
+    assert np.all(tensor_out.numpy() == [2.0, 4.0, 6.0])
 
 
 def test_opalgobase_file():
@@ -106,3 +109,4 @@ def test_sequence():
     seq.eval()
 
     assert tensor_out.data() == [2.0, 4.0, 6.0]
+    assert np.all(tensor_out.numpy() == [2.0, 4.0, 6.0])