diff --git a/tests/test_smc_ess.py b/tests/test_smc_ess.py
index ed4b19520..e8ec5fb64 100644
--- a/tests/test_smc_ess.py
+++ b/tests/test_smc_ess.py
@@ -16,7 +16,7 @@
 
 class SMCEffectiveSampleSizeTest(chex.TestCase):
     @chex.all_variants(with_pmap=False)
-    @parameterized.parameters([100, 1000, 5000])
+    @parameterized.parameters([1000, 5000])
     def test_ess(self, N):
         log_ess_fn = self.variant(functools.partial(ess.ess, log=True))
         ess_fn = self.variant(functools.partial(ess.ess, log=False))
@@ -39,7 +39,7 @@ def test_ess(self, N):
         )
 
     @chex.all_variants(with_pmap=False)
-    @parameterized.parameters(itertools.product([0.25, 0.5], [100, 1000, 5000]))
+    @parameterized.parameters(itertools.product([0.25, 0.5], [1000, 5000]))
     def test_ess_solver(self, target_ess, N):
         potential_fn = lambda pytree: -univariate_logpdf(pytree, scale=0.1)
         potential = jax.vmap(lambda x: potential_fn(x), in_axes=[0])
@@ -47,7 +47,7 @@ def test_ess_solver(self, target_ess, N):
         self.ess_solver_test_case(potential, particles, target_ess, N, 1.0)
 
     @chex.all_variants(with_pmap=False)
-    @parameterized.parameters(itertools.product([0.25, 0.5], [100, 1000, 5000]))
+    @parameterized.parameters(itertools.product([0.25, 0.5], [1000, 5000]))
     def test_ess_solver_multivariate(self, target_ess, N):
         """
         Posterior with more than one variable. Let's assume we want to
@@ -63,7 +63,7 @@ def test_ess_solver_multivariate(self, target_ess, N):
         self.ess_solver_test_case(potential, particles, target_ess, N, 10.0)
 
     @chex.all_variants(with_pmap=False)
-    @parameterized.parameters(itertools.product([0.25, 0.5], [100, 1000, 5000]))
+    @parameterized.parameters(itertools.product([0.25, 0.5], [1000, 5000]))
     def test_ess_solver_posterior_signature(self, target_ess, N):
         """
         Posterior with more than one variable. Let's assume we want to