diff --git a/tests/unit_tests/test_cell.py b/tests/unit_tests/test_cell.py
index b3c33410c8..9234e7e4b5 100644
--- a/tests/unit_tests/test_cell.py
+++ b/tests/unit_tests/test_cell.py
@@ -159,7 +159,7 @@ def test_atoms_material_cell(uo2, water):
     tuples = c.atoms.items()
     for nuc, atom_num, t in zip(expected_nucs, expected_atoms, tuples):
         assert nuc == t[0]
-        assert atom_num == t[1]
+        assert atom_num == pytest.approx(t[1])
 
     # Change volume and check if OK
     c.volume = 3.0
diff --git a/tests/unit_tests/test_lib.py b/tests/unit_tests/test_lib.py
index 6d8f567bc8..939de8720e 100644
--- a/tests/unit_tests/test_lib.py
+++ b/tests/unit_tests/test_lib.py
@@ -119,9 +119,9 @@ def test_cell(lib_init):
 def test_cell_temperature(lib_init):
     cell = openmc.lib.cells[1]
     cell.set_temperature(100.0, 0)
-    assert cell.get_temperature(0) == 100.0
+    assert cell.get_temperature(0) == pytest.approx(100.0)
     cell.set_temperature(200)
-    assert cell.get_temperature() == 200.0
+    assert cell.get_temperature() == pytest.approx(200.0)
 
 
 def test_new_cell(lib_init):