diff --git a/pandas/tests/dtypes/test_cast.py b/pandas/tests/dtypes/test_cast.py
index 590f28b275aec..20cd8b43478d2 100644
--- a/pandas/tests/dtypes/test_cast.py
+++ b/pandas/tests/dtypes/test_cast.py
@@ -191,9 +191,9 @@ def testinfer_dtype_from_scalar_errors(self):
          (pd.Categorical(list('aabc')), 'category', True),
          (pd.Categorical([1, 2, 3]), 'category', True),
          (Timestamp('20160101'), np.object_, False),
-         (np.datetime64('2016-01-01'), np.dtype('<M8[D]'), False),
+         (np.datetime64('2016-01-01'), np.dtype('=M8[D]'), False),
          (pd.date_range('20160101', periods=3),
-          np.dtype('<M8[ns]'), False),
+          np.dtype('=M8[ns]'), False),
          (pd.date_range('20160101', periods=3, tz='US/Eastern'),
           'datetime64[ns, US/Eastern]', True),
          (pd.Series([1., 2, 3]), np.float64, False),
diff --git a/pandas/tests/frame/test_convert_to.py b/pandas/tests/frame/test_convert_to.py
index 32b8a6e2b6b86..2472022b862bc 100644
--- a/pandas/tests/frame/test_convert_to.py
+++ b/pandas/tests/frame/test_convert_to.py
@@ -161,7 +161,7 @@ def test_to_records_with_unicode_column_names(self):
         expected = np.rec.array(
             [(0, 1.0)],
             dtype={"names": ["index", u"accented_name_é"],
-                   "formats": ['<i8', '<f8']}
+                   "formats": ['=i8', '=f8']}
         )
         tm.assert_almost_equal(result, expected)
 
diff --git a/pandas/tests/indexes/period/test_formats.py b/pandas/tests/indexes/period/test_formats.py
index c3926cc5f1633..daf44a559cf5c 100644
--- a/pandas/tests/indexes/period/test_formats.py
+++ b/pandas/tests/indexes/period/test_formats.py
@@ -13,7 +13,7 @@ def test_to_native_types():
 
     # First, with no arguments.
     expected = np.array(['2017-01-01', '2017-01-02',
-                         '2017-01-03'], dtype='<U10')
+                         '2017-01-03'], dtype='=U10')
 
     result = index.to_native_types()
     tm.assert_numpy_array_equal(result, expected)
@@ -23,14 +23,14 @@ def test_to_native_types():
     tm.assert_numpy_array_equal(result, expected)
 
     # Make sure slicing works
-    expected = np.array(['2017-01-01', '2017-01-03'], dtype='<U10')
+    expected = np.array(['2017-01-01', '2017-01-03'], dtype='=U10')
 
     result = index.to_native_types([0, 2])
     tm.assert_numpy_array_equal(result, expected)
 
     # Make sure date formatting works
     expected = np.array(['01-2017-01', '01-2017-02',
-                         '01-2017-03'], dtype='<U10')
+                         '01-2017-03'], dtype='=U10')
 
     result = index.to_native_types(date_format='%m-%Y-%d')
     tm.assert_numpy_array_equal(result, expected)