diff --git a/yeadon/tests/test_inertia.py b/yeadon/tests/test_inertia.py
index 04a8c3e..b477283 100644
--- a/yeadon/tests/test_inertia.py
+++ b/yeadon/tests/test_inertia.py
@@ -157,4 +157,4 @@ def test_rotate_inertia():
                         [0.0, 0.0, 0.0],
                         [0.0, 0.0, 10.0]])
 
-    testing.assert_allclose(I_b, expected_I_b, atol=1e-16)
+    testing.assert_allclose(I_b, expected_I_b, atol=1e-14)
diff --git a/yeadon/tests/test_segment.py b/yeadon/tests/test_segment.py
index 2de6f56..e259c53 100644
--- a/yeadon/tests/test_segment.py
+++ b/yeadon/tests/test_segment.py
@@ -275,4 +275,4 @@ def test_rotate_inertia(self):
                             [0.0, 0.0, 0.0],
                             [0.0, 0.0, 10.0]])
 
-        testing.assert_allclose(I_b, expected_I_b, atol=1e-16)
+        testing.assert_allclose(I_b, expected_I_b, atol=1e-14)