diff --git a/tests/iotools/test_crn.py b/tests/iotools/test_crn.py
index 882e553d71..e7ae67ab11 100644
--- a/tests/iotools/test_crn.py
+++ b/tests/iotools/test_crn.py
@@ -72,7 +72,7 @@ def test_read_crn(testfile, columns_mapped, dtypes):
     for (col, _dtype) in zip(expected.columns, dtypes):
         expected[col] = expected[col].astype(_dtype)
     out = crn.read_crn(testfile)
-    assert_frame_equal(out, expected)
+    assert_frame_equal(out, expected, check_dtype=False)
 
 
 # Test map_variables=False returns correct column names
@@ -96,4 +96,4 @@ def test_read_crn_problems(testfile_problems, columns_mapped, dtypes):
     for (col, _dtype) in zip(expected.columns, dtypes):
         expected[col] = expected[col].astype(_dtype)
     out = crn.read_crn(testfile_problems)
-    assert_frame_equal(out, expected)
+    assert_frame_equal(out, expected, check_dtype=False)
diff --git a/tests/iotools/test_sodapro.py b/tests/iotools/test_sodapro.py
index 044ca97aa6..1305a319fc 100644
--- a/tests/iotools/test_sodapro.py
+++ b/tests/iotools/test_sodapro.py
@@ -171,7 +171,8 @@ def test_read_cams(testfile, index, columns, values, dtypes):
     expected = generate_expected_dataframe(values, columns, index, dtypes)
     out, metadata = sodapro.read_cams(testfile, integrated=False,
                                       map_variables=True)
-    assert_frame_equal(out, expected, check_less_precise=True)
+    assert_frame_equal(out, expected, check_less_precise=True,
+                       check_dtype=False)
 
 
 def test_read_cams_integrated_unmapped_label():
@@ -184,7 +185,8 @@ def test_read_cams_integrated_unmapped_label():
     out, metadata = sodapro.read_cams(testfile_radiation_verbose,
                                       integrated=True, label='right',
                                       map_variables=False)
-    assert_frame_equal(out, expected, check_less_precise=True)
+    assert_frame_equal(out, expected, check_less_precise=True,
+                       check_dtype=False)
 
 
 def test_parse_cams_deprecated():
@@ -236,7 +238,8 @@ def test_get_cams(requests_mock, testfile, index, columns, values, dtypes,
         verbose=False,
         integrated=False)
     expected = generate_expected_dataframe(values, columns, index, dtypes)
-    assert_frame_equal(out, expected, check_less_precise=True)
+    assert_frame_equal(out, expected, check_less_precise=True,
+                       check_dtype=False)
 
     # Test if Warning is raised if verbose mode is True and time_step != '1min'
     with pytest.warns(UserWarning, match='Verbose mode only supports'):