diff --git a/src/gollum/precomputed_spectrum.py b/src/gollum/precomputed_spectrum.py
index 3124f0f..369efd1 100644
--- a/src/gollum/precomputed_spectrum.py
+++ b/src/gollum/precomputed_spectrum.py
@@ -115,7 +115,8 @@ def rotationally_broaden(self, vsini, u1=0.0, u2=0.0):
         """
         lam0 = np.median(self.wavelength.value)
         x2 = (299792.458 * (self.wavelength.value - lam0) / (lam0 * vsini)) ** 2
-        with catch_warnings(action="ignore", category=RuntimeWarning):
+        with catch_warnings():
+            filterwarnings("ignore", category=RuntimeWarning)
             kernel = np.where(
                 x2 < 1,
                 np.pi / 2 * u1 * (1 - x2)
diff --git a/tests/test_phoenix.py b/tests/test_phoenix.py
index 6a12849..2b498ef 100644
--- a/tests/test_phoenix.py
+++ b/tests/test_phoenix.py
@@ -68,7 +68,8 @@ def test_resample():
 def test_grid():
     """Testing the PHOENIXGrid methods"""
 
-    with catch_warnings(action='ignore', category=DeprecationWarning):
+    with catch_warnings():
+        filterwarnings("ignore", category=DeprecationWarning)
         grid = PHOENIXGrid(
             teff_range=(5000, 5100), logg_range=(2, 2.5), Z_range=(0, 0.5), experimental=True, download=True
         )