diff --git a/ci/requirements.txt b/ci/requirements.txt
index 8dc1a08a164..f248eb41e45 100644
--- a/ci/requirements.txt
+++ b/ci/requirements.txt
@@ -4,6 +4,6 @@ pandas==2.0.3
 pooch==1.7.0
 pint==0.22
 pyproj==3.6.0
-scipy==1.10.1
+scipy==1.11.1
 traitlets==5.9.0
 xarray==2023.7.0
diff --git a/tests/calc/test_thermo.py b/tests/calc/test_thermo.py
index 3119ed1da40..73f14f9a007 100644
--- a/tests/calc/test_thermo.py
+++ b/tests/calc/test_thermo.py
@@ -140,9 +140,9 @@ def test_moist_lapse_ref_pressure():
 def test_moist_lapse_multiple_temps():
     """Test moist_lapse with multiple starting temperatures."""
     temp = moist_lapse(np.array([1050., 800., 600., 500., 400.]) * units.mbar,
-                       np.array([19.85, np.nan, 19.85]) * units.degC, 1000. * units.mbar)
+                       np.array([19.85, 25.6, 19.85]) * units.degC, 1000. * units.mbar)
     true_temp = np.array([[294.76, 284.64, 272.81, 264.42, 252.91],
-                          [np.nan, np.nan, np.nan, np.nan, np.nan],
+                          [300.35, 291.27, 281.05, 274.05, 264.64],
                           [294.76, 284.64, 272.81, 264.42, 252.91]]) * units.kelvin
     assert_array_almost_equal(temp, true_temp, 2)