diff --git a/tests/scipy_fft_test.py b/tests/scipy_fft_test.py
index 38d6cccd8..77ee057d2 100644
--- a/tests/scipy_fft_test.py
+++ b/tests/scipy_fft_test.py
@@ -106,6 +106,9 @@ class LaxBackedScipyFftTests(jtu.JaxTestCase):
     dtype=real_dtypes,
     norm=[None, 'ortho'],
   )
+  # TODO(phawkins): these tests are failing on T4 GPUs in CI with a
+  # CUDA_ERROR_ILLEGAL_ADDRESS.
+  @jtu.skip_on_devices("cuda")
   def testiDctn(self, shape, dtype, s, axes, norm):
     rng = jtu.rand_default(self.rng())
     args_maker = lambda: (rng(shape, dtype),)