diff --git a/setup.py b/setup.py
index 237f076..774c7ab 100644
--- a/setup.py
+++ b/setup.py
@@ -83,9 +83,7 @@
 
 extras_require = setuptools_args['extras_require'] = {
     'test': [
-        # TestIntArray.test_bad_values fails with numpy>=1.16.0
-        'numpy<1.16.0',
-
+        'numpy',
         'pandas',
         'xarray',
         'pytest',  # traitlets[test] require this
diff --git a/traittypes/tests/test_traittypes.py b/traittypes/tests/test_traittypes.py
index fc6eb10..c1a0681 100644
--- a/traittypes/tests/test_traittypes.py
+++ b/traittypes/tests/test_traittypes.py
@@ -17,7 +17,7 @@
 
 
 class IntArrayTrait(HasTraits):
-    value = Array().tag(dtype=np.int)
+    value = Array(dtype=np.int)
 
 
 class TestIntArray(TraitTestBase):